Rotor Hats
Rotor Hats

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Select from the following options to display a list of hats for Wilwood Brake Kits:
Rotor Bolt Circle:
Hat Offset:
Wheel Stud Circle:
Mount Style:

Search Results Wheel Stud Circle: 5 x 4.75
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 7.00
Hat Offset: 2.020
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
Hat is drilled and countersunk in three places to accommodate hat to hub anchoring screws used with specific Wilwood hat mount hubs. Use 230-7032 (contains 6 qty. 1/4-20 x .50 Flat Head Hex Drive mounting screws)
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-9321
Info Details
Center Reg Dia 2.67
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 5.86
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.25
Hat Offset: 0.230
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Short Offset

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing Zoom Image

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:
Wheel mounting pad must not be larger than 6.00" to fit into inset area of this hat.
Ordering Information for Big Brake Hat - Short Offset
Item No 170-12390
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 7.75
Shoe I.D.
Face Thick 0.30
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Dynamic Bobbin Mount Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.290
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Dynamic Bobbin Mount Hat - Short Offset
Mount Type: Dynamic Mount
Material: Aluminum
Big Brake Dynamic Bobbin Mount Hat - Short Offset

Big Brake Dynamic Bobbin Mount Hat - Short Offset Drawing Big Brake Dynamic Bobbin Mount Hat - Short Offset Drawing Zoom Image

Big Brake Dynamic Bobbin Mount Hat - Short Offset Description

Wilwood's new Dynamic Bobbin Mount Hats incorporate a new rotor mounting system that allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion are eliminated.
NOTE & CAUTIONS:
Wheel mounting pad must not be larger than 6.00" to fit into inset area of this hat.
Ordering Information for Big Brake Dynamic Bobbin Mount Hat - Short Offset
Item No 170-13170
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 6.90
Shoe I.D.
Face Thick 0.30
Price $311.77
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.290
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Short Offset

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing Zoom Image

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-8919
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 7.72
Shoe I.D.
Face Thick 0.36
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Dynamic Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.518
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Dynamic Hat - Short Offset
Mount Type: Dynamic Mount
Material: Aluminum
Big Brake Dynamic Hat - Short Offset

Big Brake Dynamic Hat - Short Offset Drawing Big Brake Dynamic Hat - Short Offset Drawing Zoom Image

Big Brake Dynamic Hat - Short Offset Description

Big Brake Dynamic Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature dynamic mount t-nut mount holes for use with standard through-hole mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, Big Brake Dynamic hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Dynamic Hat - Short Offset
Item No 170-15744
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 7.11
Shoe I.D.
Face Thick 0.33
Price $277.12
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.540
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-11804
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.580 
I.D. Clear(in) 7.09
Shoe I.D.
Face Thick 0.25
Price $224.35
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.560
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Short Offset

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing Zoom Image

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-8815
Info Details
Center Reg Dia 3.12
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 7.75
Shoe I.D.
Face Thick 0.29
Price $224.35
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.640
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Short Offset

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing Zoom Image

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:
3.06" diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Short Offset
Item No 170-9128
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.580 
I.D. Clear(in) 6.30
Shoe I.D.
Face Thick 0.31
Price $224.35
Purchase
Call (805) 388-1188
Big Brake Dynamic Bobbin Mount Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.658
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Dynamic Bobbin Mount Hat - Short Offset
Mount Type: Dynamic Mount
Material: Aluminum
Big Brake Dynamic Bobbin Mount Hat - Short Offset

Big Brake Dynamic Bobbin Mount Hat - Short Offset Drawing Big Brake Dynamic Bobbin Mount Hat - Short Offset Drawing Zoom Image

Big Brake Dynamic Bobbin Mount Hat - Short Offset Description

Wilwood's new Dynamic Bobbin Mount Hats incorporate a new rotor mounting system that allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion are eliminated.
NOTE & CAUTIONS:

Ordering Information for Big Brake Dynamic Bobbin Mount Hat - Short Offset
Item No 170-12624
Info Details
Center Reg Dia 2.80
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 7.31
Shoe I.D.
Face Thick 0.30
Price $346.42
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.710
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Short Offset

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing Zoom Image

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-10533
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 7.49
Shoe I.D.
Face Thick 0.30
Price $197.01
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.730
Wheel Stud Circle(s): 5 Holes  on 4.750  ;  4.720  ;  4.500
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Iron
Parking Brake Hat - Standard

Parking Brake Hat - Standard Drawing Parking Brake Hat - Standard Drawing Zoom Image

Parking Brake Hat - Standard Description

These premium grade cast iron hats make it possible to use bolt-on rotors on vehicles equipped with internal shoe parking brake assemblies. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Parking Brake Hat - Standard
Item No 170-11306
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 6.26
Shoe I.D. 7.91
Face Thick 0.25
Price $224.35
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.810
Wheel Stud Circle(s): 5 Holes  on 4.750  ;  5.000   
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Short Offset

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-16782
Info Details
Center Reg Dia 3.09
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 7.32
Shoe I.D.
Face Thick 0.25
Price $144.63
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.880
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Short Offset

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing Zoom Image

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-6837
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.500 / 0.560 
I.D. Clear(in) 7.25
Shoe I.D.
Face Thick 0.30
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.880
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Short Offset

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing Zoom Image

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-10149
Info Details
Center Reg Dia 2.80
Whl Stud Cir Dia/Stud Dia 4.500 / 0.580 
I.D. Clear(in) 7.25
Shoe I.D.
Face Thick 0.30
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.000
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-12314
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 7.09
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.100
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
Hat is drilled and countersunk in three places to accommodate hat to hub anchoring screws used with specific Wilwood hat mount hubs. Use 230-7032 (contains 6 qty. 1/4-20 x .50 Flat Head Hex Drive mounting screws)
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-15555
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 7.02
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.200
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
Hat is drilled and countersunk in three places to accommodate hat to hub anchoring screws used with specific Wilwood hat mount hubs. Use 230-7032 (contains 6 qty. 1/4-20 x .50 Flat Head Hex Drive mounting screws)
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-8883
Info Details
Center Reg Dia 3.00
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.96
Shoe I.D.
Face Thick 0.25
Price $224.35
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.200
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
Hat is drilled and countersunk in three places to accommodate hat to hub anchoring screws used with specific Wilwood hat mount hubs. Use 230-7032 (contains 6 qty. 1/4-20 x .50 Flat Head Hex Drive mounting screws)
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-10231
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.86
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.230
Wheel Stud Circle(s): 5 Holes  on 4.750  ;  5.000   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-16544
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 7.27
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.250
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Parking Brake Hat - Standard

Parking Brake Hat - Standard Drawing Parking Brake Hat - Standard Drawing Zoom Image

Parking Brake Hat - Standard Description

These premium grade aluminum hats are used with Wilwood's internal shoe parking brake kits. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Parking Brake Hat - Standard
Item No 170-13687
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.85
Shoe I.D. 7.23
Face Thick 0.18
Price $224.35
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.320
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Parking Brake Hat - Standard

Parking Brake Hat - Standard Drawing Parking Brake Hat - Standard Drawing Zoom Image

Parking Brake Hat - Standard Description

These premium grade aluminum hats are used with Wilwood's internal shoe parking brake kits. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance.
NOTE & CAUTIONS:

Ordering Information for Parking Brake Hat - Standard
Item No 170-13908
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 6.47
Shoe I.D. 7.48
Face Thick 0.25
Price $224.35
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.340
Wheel Stud Circle(s): 5 Holes  on 4.530  ;  4.750  ;  5.000
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Parking Brake Hat - Standard

Parking Brake Hat - Standard Drawing Parking Brake Hat - Standard Drawing Zoom Image

Parking Brake Hat - Standard Description

These premium grade aluminum hats are used with Wilwood's internal shoe parking brake kits. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Parking Brake Hat - Standard
Item No 170-13904
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.530 / 0.610 
I.D. Clear(in) 6.85
Shoe I.D. 7.23
Face Thick 0.18
Price $224.35
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.380
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  5.000  ;  4.750
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-11965
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.40
Shoe I.D.
Face Thick 0.28
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.380
Wheel Stud Circle(s): 5 Holes  on 4.750  ;  5.000   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-14209
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 6.58
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.470
Wheel Stud Circle(s): 5 Holes  on 5.000  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Image Coming Soon

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-17090
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 5.000 / 0.520 
I.D. Clear(in) 6.41
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.500
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-12516
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.40
Shoe I.D.
Face Thick 0.25
Price $224.35
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.500
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-11937
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.40
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.540
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Parking Brake Hat - Standard

Parking Brake Hat - Standard Drawing Parking Brake Hat - Standard Drawing Zoom Image

Parking Brake Hat - Standard Description

These premium grade aluminum hats are used with Wilwood's internal shoe parking brake kits. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance.
NOTE & CAUTIONS:

Ordering Information for Parking Brake Hat - Standard
Item No 170-13909
Info Details
Center Reg Dia 3.12
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.85
Shoe I.D. 7.23
Face Thick 0.18
Price $224.35
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.540
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Parking Brake Hat - Standard

Parking Brake Hat - Standard Drawing Parking Brake Hat - Standard Drawing Zoom Image

Parking Brake Hat - Standard Description

These premium grade aluminum hats are used with Wilwood's internal shoe parking brake kits. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Parking Brake Hat - Standard
Item No 170-13539
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.85
Shoe I.D. 7.23
Face Thick 0.18
Price $224.35
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.540
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Iron
Image Coming Soon

Parking Brake Hat - Standard Drawing Parking Brake Hat - Standard Drawing Zoom Image

Parking Brake Hat - Standard Description

These premium grade cast iron hats are used with Wilwood's internal shoe parking brake kits. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Parking Brake Hat - Standard
Item No 170-9492
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.85
Shoe I.D. 7.23
Face Thick 0.18
Price $224.35
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.600
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Iron
Parking Brake Hat - Standard

Parking Brake Hat - Standard Drawing Parking Brake Hat - Standard Drawing Zoom Image

Parking Brake Hat - Standard Description

These premium grade cast iron hats make it possible to use bolt-on rotors on vehicles equipped with internal shoe parking brake assemblies. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance.
NOTE & CAUTIONS:

Ordering Information for Parking Brake Hat - Standard
Item No 170-10621
Info Details
Center Reg Dia 2.81
Whl Stud Cir Dia/Stud Dia 4.750 / 0.450 
I.D. Clear(in) 6.42
Shoe I.D. 6.54
Face Thick 0.29
Price $224.35
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.620
Wheel Stud Circle(s): 5 Holes  on 4.750  ;  5.000   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-10753
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 6.85
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.620
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Flared Bell
Item No 170-10620
Info Details
Center Reg Dia 2.81
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.40
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.620
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
Hat is drilled and countersunk in three places to accommodate hat to hub anchoring screws used with specific Wilwood hat mount hubs. Use 230-7032 (contains 6 qty. 1/4-20 x .50 Flat Head Hex Drive mounting screws)
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-10489
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.40
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Dynamic Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.620
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Dynamic Hat - Flared Bell
Mount Type: Dynamic Mount
Material: Aluminum
Big Brake Dynamic Hat - Flared Bell

Big Brake Dynamic Hat - Flared Bell Drawing Big Brake Dynamic Hat - Flared Bell Drawing Zoom Image

Big Brake Dynamic Hat - Flared Bell Description

GT Series Dynamic Mount Rotor Hats are engineered to withstand the rigors and demands of extreme motorsports competition. Each hat is precision machined from premium grade aluminum offering high strength with low unsprung and rotating weight. Wilwood T-nuts float within the hat and provide true dynamic mounting of a standard through-hole mount rotor. The wide load bearing load surface of the T-nut and the straight through-hole mount rotors provide the most durable and accurate method of isolating potential pad engagement harmonics and the in-service thermal variations that occur between the hat and the rotor.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Dynamic Hat - Flared Bell
Item No 170-14327
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.79
Shoe I.D.
Face Thick 0.25
Price $242.49
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.625
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-15859
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.23
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.700
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Iron
Parking Brake Hat - Standard

Parking Brake Hat - Standard Drawing Parking Brake Hat - Standard Drawing Zoom Image

Parking Brake Hat - Standard Description

These premium grade cast iron hats make it possible to use bolt-on rotors on vehicles equipped with OEM internal shoe parking brake assemblies. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance. Used for big rotor brake kits on truck, SUV, and 4WD axles with either 6 or 8 lug configurations.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Parking Brake Hat - Standard
Item No 170-11938
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 6.48
Shoe I.D. 6.98
Face Thick 0.25
Price $224.35
Purchase
Call (805) 388-1188
Big Brake Dynamic Bobbin Mount Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.740
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Dynamic Bobbin Mount Hat - Flared Bell
Mount Type: Dynamic Mount
Material: Aluminum
Big Brake Dynamic Bobbin Mount Hat - Flared Bell

Big Brake Dynamic Bobbin Mount Hat - Flared Bell Drawing Big Brake Dynamic Bobbin Mount Hat - Flared Bell Drawing Zoom Image

Big Brake Dynamic Bobbin Mount Hat - Flared Bell Description

Wilwood's new Dynamic Bobbin Mount Hats incorporate a new rotor mounting system that allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion are eliminated.
NOTE & CAUTIONS:

Ordering Information for Big Brake Dynamic Bobbin Mount Hat - Flared Bell
Item No 170-13136
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 7.10
Shoe I.D.
Face Thick 0.25
Price $311.77
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.750
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
Hat is drilled and countersunk in three places to accommodate hat to hub anchoring screws used with specific Wilwood hat mount hubs. Use 230-7032 (contains 6 qty. 1/4-20 x .50 Flat Head Hex Drive mounting screws)
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-7467
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.40
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Dynamic Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.750
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Dynamic Hat - Flared Bell
Mount Type: Dynamic Mount
Material: Aluminum
Big Brake Dynamic Hat - Flared Bell

Big Brake Dynamic Hat - Flared Bell Drawing Big Brake Dynamic Hat - Flared Bell Drawing Zoom Image

Big Brake Dynamic Hat - Flared Bell Description

GT Series Dynamic Mount Rotor Hats are engineered to withstand the rigors and demands of extreme motorsports competition. Each hat is precision machined from premium grade aluminum offering high strength with low unsprung and rotating weight. Wilwood T-nuts float within the hat and provide true dynamic mounting of a standard through-hole mount rotor. The wide load bearing load surface of the T-nut and the straight through-hole mount rotors provide the most durable and accurate method of isolating potential pad engagement harmonics and the in-service thermal variations that occur between the hat and the rotor.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Dynamic Hat - Flared Bell
Item No 170-14328
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.99
Shoe I.D.
Face Thick 0.25
Price $242.49
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.750
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-14268
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.560 
I.D. Clear(in) 6.41
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.880
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
Hat is drilled and countersunk in three places to accommodate hat to hub anchoring screws used with specific Wilwood hat mount hubs. Use 230-7032 (contains 6 qty. 1/4-20 x .50 Flat Head Hex Drive mounting screws)
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-6994
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.40
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.950
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Parking Brake Hat - Standard

Parking Brake Hat - Standard Drawing Parking Brake Hat - Standard Drawing Zoom Image

Parking Brake Hat - Standard Description

These premium grade aluminum hats are used with Wilwood's internal shoe parking brake kits. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Parking Brake Hat - Standard
Item No 170-13540
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.85
Shoe I.D. 7.23
Face Thick 0.18
Price $224.35
Purchase
Call (805) 388-1188
Parking Brake Hat - Dynamic Bobbin Mount
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.950
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Parking Brake Hat - Dynamic Bobbin Mount
Mount Type: Dynamic Mount
Material: Iron
Parking Brake Hat - Dynamic Bobbin Mount

Parking Brake Hat - Dynamic Bobbin Mount Drawing Parking Brake Hat - Dynamic Bobbin Mount Drawing Zoom Image

Parking Brake Hat - Dynamic Bobbin Mount Description

Wilwood's new Dynamic Bobbin Mount Hats incorporate a new rotor mounting system that allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion are eliminated.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Parking Brake Hat - Dynamic Bobbin Mount
Item No 170-12625
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.85
Shoe I.D. 7.23
Face Thick 0.18
Price $311.77
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 1.950
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Iron
Image Coming Soon

Parking Brake Hat - Standard Drawing Parking Brake Hat - Standard Drawing Zoom Image

Parking Brake Hat - Standard Description

These premium grade cast iron hats are used with Wilwood's internal shoe parking brake kits. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Parking Brake Hat - Standard
Item No 170-9493
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.85
Shoe I.D. 7.23
Face Thick 0.18
Price $224.35
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 2.000
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
Hat is drilled and countersunk in three places to accommodate hat to hub anchoring screws used with specific Wilwood hat mount hubs. Use 230-7032 (contains 6 qty. 1/4-20 x .50 Flat Head Hex Drive mounting screws)
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-7038
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.40
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 2.035
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Flared Bell

Big Brake Hat - Flared Bell Drawing Big Brake Hat - Flared Bell Drawing Zoom Image

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-15860
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.29
Shoe I.D.
Face Thick 0.25
Price $197.01
Purchase
Call (805) 388-1188
Big Brake Dynamic Lug Drive - Short Offset
Rotor Bolt Circle: 12lug-7.77
Hat Offset: 0.290
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Dynamic Lug Drive - Short Offset
Mount Type: Dynamic Lug Mount
Material: Aluminum
Big Brake Dynamic Lug Drive - Short Offset

Big Brake Dynamic Lug Drive - Short Offset Drawing Big Brake Dynamic Lug Drive - Short Offset Drawing Zoom Image

Big Brake Dynamic Lug Drive - Short Offset Description

Wilwood's new Big Brake Dynamic Lug Drive hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-14912 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Big Brake Dynamic Lug Drive - Short Offset
Item No 170-14991
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.70
Shoe I.D.
Face Thick 0.30
Price $277.12
Purchase
Call (805) 388-1188
Big Brake Dynamic Lug Drive - Short Offset
Rotor Bolt Circle: 12lug-7.77
Hat Offset: 0.518
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Dynamic Lug Drive - Short Offset
Mount Type: Dynamic Lug Mount
Material: Aluminum
Big Brake Dynamic Lug Drive - Short Offset

Big Brake Dynamic Lug Drive - Short Offset Drawing Big Brake Dynamic Lug Drive - Short Offset Drawing Zoom Image

Big Brake Dynamic Lug Drive - Short Offset Description

Wilwood's new Big Brake Dynamic Lug Drive hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-14912 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Big Brake Dynamic Lug Drive - Short Offset
Item No 170-15717
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 6.65
Shoe I.D.
Face Thick 0.33
Price $225.15
Purchase
Call (805) 388-1188
Big Brake Dynamic Lug Drive - Flared Bell
Rotor Bolt Circle: 12lug-7.77
Hat Offset: 1.420
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Dynamic Lug Drive - Flared Bell
Mount Type: Dynamic Lug Mount
Material: Aluminum
Big Brake Dynamic Lug Drive - Flared Bell

Big Brake Dynamic Lug Drive - Flared Bell Drawing Big Brake Dynamic Lug Drive - Flared Bell Drawing Zoom Image

Big Brake Dynamic Lug Drive - Flared Bell Description

Wilwood's new Big Brake Dynamic Lug Drive hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-14912 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Big Brake Dynamic Lug Drive - Flared Bell
Item No 170-16102
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.91
Shoe I.D.
Face Thick 0.25
Price $207.82
Purchase
Call (805) 388-1188
Big Brake Dynamic Lug Drive - Short Offset
Rotor Bolt Circle: 12lug-8.80
Hat Offset: 0.280
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Dynamic Lug Drive - Short Offset
Mount Type: Dynamic Lug Mount
Material: Aluminum
Big Brake Dynamic Lug Drive - Short Offset

Big Brake Dynamic Lug Drive - Short Offset Drawing Big Brake Dynamic Lug Drive - Short Offset Drawing Zoom Image

Big Brake Dynamic Lug Drive - Short Offset Description

Wilwood's new Big Brake Dynamic Lug Drive hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-14913 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Big Brake Dynamic Lug Drive - Short Offset
Item No 170-16199
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 7.94
Shoe I.D.
Face Thick 0.30
Price $238.99
Purchase
Call (805) 388-1188
Big Brake Dynamic Lug Drive - Short Offset
Rotor Bolt Circle: 12Lug-8.80
Hat Offset: 0.290
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Dynamic Lug Drive - Short Offset
Mount Type: Dynamic Lug Mount
Material: Aluminum
Big Brake Dynamic Lug Drive - Short Offset

Big Brake Dynamic Lug Drive - Short Offset Drawing Big Brake Dynamic Lug Drive - Short Offset Drawing Zoom Image

Big Brake Dynamic Lug Drive - Short Offset Description

Wilwood's new Big Brake Dynamic Lug Drive hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-14913 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Big Brake Dynamic Lug Drive - Short Offset
Item No 170-14992
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.70
Shoe I.D.
Face Thick 0.30
Price $277.12
Purchase
Call (805) 388-1188
Big Brake Dynamic Lug Drive - Short Offset
Rotor Bolt Circle: 12lug-8.80
Hat Offset: 0.518
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Dynamic Lug Drive - Short Offset
Mount Type: Dynamic Lug Mount
Material: Aluminum
Big Brake Dynamic Lug Drive - Short Offset

Big Brake Dynamic Lug Drive - Short Offset Drawing Big Brake Dynamic Lug Drive - Short Offset Drawing Zoom Image

Big Brake Dynamic Lug Drive - Short Offset Description

Wilwood's new Big Brake Dynamic Lug Drive hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-14913 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Big Brake Dynamic Lug Drive - Short Offset
Item No 170-15738
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 7.68
Shoe I.D.
Face Thick 0.34
Price $225.15
Purchase
Call (805) 388-1188
Big Brake Dynamic Lug Drive - Short Offset
Rotor Bolt Circle: 12lug-8.80
Hat Offset: 0.550
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Dynamic Lug Drive - Short Offset
Mount Type: Dynamic Lug Mount
Material: Aluminum
Big Brake Dynamic Lug Drive - Short Offset

Big Brake Dynamic Lug Drive - Short Offset Drawing Big Brake Dynamic Lug Drive - Short Offset Drawing Zoom Image

Big Brake Dynamic Lug Drive - Short Offset Description

Wilwood's new Big Brake Dynamic Lug Drive hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-14913 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Big Brake Dynamic Lug Drive - Short Offset
Item No 170-15999
Info Details
Center Reg Dia 3.12
Whl Stud Cir Dia/Stud Dia 4.750 / 0.610 
I.D. Clear(in) 7.63
Shoe I.D.
Face Thick 0.29
Price $155.85
Purchase
Call (805) 388-1188
Big Brake Dynamic Lug Drive - Short Offset
Rotor Bolt Circle: 12lug-8.80
Hat Offset: 0.692
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Dynamic Lug Drive - Short Offset
Mount Type: Dynamic Lug Mount
Material: Aluminum
Big Brake Dynamic Lug Drive - Short Offset

Big Brake Dynamic Lug Drive - Short Offset Drawing Big Brake Dynamic Lug Drive - Short Offset Drawing Zoom Image

Big Brake Dynamic Lug Drive - Short Offset Description

Wilwood's new Big Brake Dynamic Lug Drive hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-14913 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Big Brake Dynamic Lug Drive - Short Offset
Item No 170-16203
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 7.54
Shoe I.D.
Face Thick 0.30
Price $207.82
Purchase
Call (805) 388-1188
Big Brake Dynamic Lug Drive - Flared Bell
Rotor Bolt Circle: 12lug-8.80
Hat Offset: 1.080
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Dynamic Lug Drive - Flared Bell
Mount Type: Dynamic Lug Mount
Material: Aluminum
Big Brake Dynamic Lug Drive - Flared Bell

Big Brake Dynamic Lug Drive - Flared Bell Drawing Big Brake Dynamic Lug Drive - Flared Bell Drawing Zoom Image

Big Brake Dynamic Lug Drive - Flared Bell Description

Wilwood's new Big Brake Dynamic Lug Drive hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-14913 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Big Brake Dynamic Lug Drive - Flared Bell
Item No 170-16011
Info Details
Center Reg Dia 2.96
Whl Stud Cir Dia/Stud Dia 4.750 / 0.610 
I.D. Clear(in) 7.42
Shoe I.D.
Face Thick 0.34
Price $207.82
Purchase
Call (805) 388-1188
Big Brake Dynamic Lug Drive - Flared Bell
Rotor Bolt Circle: 12lug-8.80
Hat Offset: 1.590
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Dynamic Lug Drive - Flared Bell
Mount Type: Dynamic Lug Mount
Material: Aluminum
Big Brake Dynamic Lug Drive - Flared Bell

Big Brake Dynamic Lug Drive - Flared Bell Drawing Big Brake Dynamic Lug Drive - Flared Bell Drawing Zoom Image

Big Brake Dynamic Lug Drive - Flared Bell Description

Wilwood's new Big Brake Dynamic Lug Drive hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-14913 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Big Brake Dynamic Lug Drive - Flared Bell
Item No 170-16107
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.28
Shoe I.D.
Face Thick 0.25
Price $225.15
Purchase
Call (805) 388-1188
Drag Hat - Spindle Mount
Rotor Bolt Circle: 5 x 5.00
Hat Offset: 0.750
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Drag Hat - Spindle Mount
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Spindle Mount

Drag Hat - Spindle Mount Drawing Drag Hat - Spindle Mount Drawing Zoom Image

Drag Hat - Spindle Mount Description

Wilwood's Spindle Mount Rotor Hats are manufactured from premium grade aluminum alloys offering high strength, low weight, and show quality appeal. This hat is designed for direct mount to spindle mount wheel applications and has an outside (wheel) mounting face to rotor face mounting stated offset.
NOTE & CAUTIONS:
Spindle mount hat, offset ststed is from outside face to outside face.
Ordering Information for Drag Hat - Spindle Mount
Item No 170-16562
Info Details
Center Reg Dia 3.27
Whl Stud Cir Dia/Stud Dia 4.750 / 0.390 
I.D. Clear(in)
Shoe I.D.
Face Thick 0.22
Price $128.14
Purchase
Call (805) 388-1188
Drag Hat - Spindle Mount
Rotor Bolt Circle: 5 x 5.00
Hat Offset: 0.900
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Drag Hat - Spindle Mount
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Spindle Mount

Drag Hat - Spindle Mount Drawing Drag Hat - Spindle Mount Drawing Zoom Image

Drag Hat - Spindle Mount Description

Wilwood's Spindle Mount Rotor Hats are manufactured from premium grade aluminum alloys offering high strength, low weight, and show quality appeal. This hat is designed for direct mount to spindle mount wheel applications and has an outside (wheel) mounting face to rotor face mounting stated offset.
NOTE & CAUTIONS:
Spindle mount hat, offset ststed is from outside face to outside face.
Ordering Information for Drag Hat - Spindle Mount
Item No 170-16563
Info Details
Center Reg Dia 3.27
Whl Stud Cir Dia/Stud Dia 4.750 / 0.390 
I.D. Clear(in)
Shoe I.D.
Face Thick 0.22
Price $134.92
Purchase
Call (805) 388-1188
Drag Hat - Spindle Mount
Rotor Bolt Circle: 5 x 5.00
Hat Offset: 1.000
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Drag Hat - Spindle Mount
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Spindle Mount

Drag Hat - Spindle Mount Drawing Drag Hat - Spindle Mount Drawing Zoom Image

Drag Hat - Spindle Mount Description

Wilwood's Spindle Mount Rotor Hats are manufactured from premium grade aluminum alloys offering high strength, low weight, and show quality appeal. This hat is designed for direct mount to spindle mount wheel applications and has an outside (wheel) mounting face to rotor face mounting stated offset.
NOTE & CAUTIONS:

Ordering Information for Drag Hat - Spindle Mount
Item No 170-0995
Info Details
Center Reg Dia 3.57
Whl Stud Cir Dia/Stud Dia 4.750 / 0.390 
I.D. Clear(in)
Shoe I.D.
Face Thick 0.22
Price $128.14
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 0.600
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Short Offset

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-16532
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 5.90
Shoe I.D.
Face Thick 0.28
Price $155.85
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 0.880
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Short Offset

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing Zoom Image

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-8493
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 6.00
Shoe I.D.
Face Thick 0.30
Price $155.85
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 0.935
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Image Coming Soon

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-16314
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 6.16
Shoe I.D.
Face Thick 0.25
Price $155.85
Purchase
Call (805) 388-1188
Drag Hat - Shallow Offset
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 1.160
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Drag Hat - Shallow Offset
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Shallow Offset

Drag Hat - Shallow Offset Drawing Drag Hat - Shallow Offset Drawing Zoom Image

Drag Hat - Shallow Offset Description

GT Series Shallow Offset Drag hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Shallow Offset Drag Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Drag Hat - Shallow Offset
Item No 170-10543
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.580 
I.D. Clear(in) 5.90
Shoe I.D.
Face Thick 0.25
Price $164.50
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 1.380
Wheel Stud Circle(s): 5 Holes  on 4.750  ;  5.000   
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Short Offset

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Short Offset
Item No 170-16541
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 6.27
Shoe I.D.
Face Thick 0.25
Price $155.85
Purchase
Call (805) 388-1188
Drag Hat - Standard
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 1.410
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Drag Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Standard

Drag Hat - Standard Drawing Drag Hat - Standard Drawing Zoom Image

Drag Hat - Standard Description

Wilwood's HD Series Fixed Mount Rotor Hats have a long standing reputation for fit, performance, and durability. HD Series hats are manufactured from premium grade aluminum alloys offering high strength, low weight, and show quality appeal. HD hats have not only been a mainstay in many of Wilwood's racing disc brake conversion kits, but they can cover a range of applications from an OE four lug axle shaft to a Grand-National stock car racing hub. HD hats feature a straight bell construction with a flanged rotor mount ring, Threaded-hole mounts for use with through hole rotors. When used with matching Wilwood rotor hardware, these hats provide solid mounting for a wide range of custom and competition disc brake applications.These features combine to provide maximum radial clearance between the caliper body and the hat. This can be a critical factor when trying to squeeze a large caliper inside a small wheel. Many hats offer multi-lug wheel patterns for added versatility. Some hats can be ordered blank for custom axle building and other unique applications.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Drag Hat - Standard
Item No 170-0764
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.14
Shoe I.D.
Face Thick 0.50
Price $109.08
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 1.430
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750   
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum
Big Brake Hat - Short Offset

Big Brake Hat - Short Offset Drawing Big Brake Hat - Short Offset Drawing Zoom Image

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:
Hat is drilled and countersunk in three places to accommodate hat to hub anchoring screws used with specific Wilwood hat mount hubs. Use 230-7032 (contains 6 qty. 1/4-20 x .50 Flat Head Hex Drive mounting screws)
Ordering Information for Big Brake Hat - Short Offset
Item No 170-7632
Info Details
Center Reg Dia 3.00
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.04
Shoe I.D.
Face Thick 0.25
Price $155.85
Purchase
Call (805) 388-1188
Drag Hat - Shallow Offset
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 1.530
Wheel Stud Circle(s): 5 Holes  on 5.000  ;  4.750   
Type: Drag Hat - Shallow Offset
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Shallow Offset

Drag Hat - Shallow Offset Drawing Drag Hat - Shallow Offset Drawing Zoom Image

Drag Hat - Shallow Offset Description

Wilwood's HD Series Fixed Mount Rotor Hats have a long standing reputation for fit, performance, and durability. HD Series hats are manufactured from premium grade aluminum alloys offering high strength, low weight, and show quality appeal. HD hats have not only been a mainstay in many of Wilwood's racing disc brake conversion kits, but they can cover a range of applications from an OE four lug axle shaft to a Grand-National stock car racing hub. HD hats feature a straight bell construction with a flanged rotor mount ring, Threaded-hole mounts for use with through hole rotors. When used with matching Wilwood rotor hardware, these hats provide solid mounting for a wide range of custom and competition disc brake applications.These features combine to provide maximum radial clearance between the caliper body and the hat. This can be a critical factor when trying to squeeze a large caliper inside a small wheel. Many hats offer multi-lug wheel patterns for added versatility. Some hats can be ordered blank for custom axle building and other unique applications.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Drag Hat - Shallow Offset
Item No 170-14206
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 5.000 / 0.520 
I.D. Clear(in) 6.22
Shoe I.D.
Face Thick 0.25
Price $128.14
Purchase
Call (805) 388-1188
Drag Hat - Standard
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 1.590
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Drag Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Standard

Drag Hat - Standard Drawing Drag Hat - Standard Drawing Zoom Image

Drag Hat - Standard Description

Wilwood's HD Series Fixed Mount Rotor Hats have a long standing reputation for fit, performance, and durability. HD Series hats are manufactured from premium grade aluminum alloys offering high strength, low weight, and show quality appeal. HD hats have not only been a mainstay in many of Wilwood's racing disc brake conversion kits, but they can cover a range of applications from an OE four lug axle shaft to a Grand-National stock car racing hub. HD hats feature a straight bell construction with a flanged rotor mount ring, Threaded-hole mounts for use with through hole rotors. When used with matching Wilwood rotor hardware, these hats provide solid mounting for a wide range of custom and competition disc brake applications.These features combine to provide maximum radial clearance between the caliper body and the hat. This can be a critical factor when trying to squeeze a large caliper inside a small wheel. Many hats offer multi-lug wheel patterns for added versatility. Some hats can be ordered blank for custom axle building and other unique applications.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Drag Hat - Standard
Item No 170-0317
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.14
Shoe I.D.
Face Thick 0.25
Price $109.08
Purchase
Call (805) 388-1188
Drag Hat - Shallow Offset
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 1.590
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Drag Hat - Shallow Offset
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Shallow Offset

Drag Hat - Shallow Offset Drawing Drag Hat - Shallow Offset Drawing Zoom Image

Drag Hat - Shallow Offset Description

GT Series Shallow Offset Drag hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Shallow Offset Drag Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Drag Hat - Shallow Offset
Item No 170-10782
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.520 
I.D. Clear(in) 6.04
Shoe I.D.
Face Thick 0.25
Price $164.50
Purchase
Call (805) 388-1188
Drag Hat - Standard
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 1.710
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Drag Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Standard

Drag Hat - Standard Drawing Drag Hat - Standard Drawing Zoom Image

Drag Hat - Standard Description

Wilwood's HD Series Fixed Mount Rotor Hats have a long standing reputation for fit, performance, and durability. HD Series hats are manufactured from premium grade aluminum alloys offering high strength, low weight, and show quality appeal. HD hats have not only been a mainstay in many of Wilwood's racing disc brake conversion kits, but they can cover a range of applications from an OE four lug axle shaft to a Grand-National stock car racing hub. HD hats feature a straight bell construction with a flanged rotor mount ring, Threaded-hole mounts for use with through hole rotors. When used with matching Wilwood rotor hardware, these hats provide solid mounting for a wide range of custom and competition disc brake applications.These features combine to provide maximum radial clearance between the caliper body and the hat. This can be a critical factor when trying to squeeze a large caliper inside a small wheel. Many hats offer multi-lug wheel patterns for added versatility. Some hats can be ordered blank for custom axle building and other unique applications.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Drag Hat - Standard
Item No 170-0259
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.14
Shoe I.D.
Face Thick 0.25
Price $109.08
Purchase
Call (805) 388-1188
Drag Hat - Standard
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 1.770
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Drag Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Standard

Drag Hat - Standard Drawing Drag Hat - Standard Drawing Zoom Image

Drag Hat - Standard Description

Wilwood's HD Series Fixed Mount Rotor Hats have a long standing reputation for fit, performance, and durability. HD Series hats are manufactured from premium grade aluminum alloys offering high strength, low weight, and show quality appeal. HD hats have not only been a mainstay in many of Wilwood's racing disc brake conversion kits, but they can cover a range of applications from an OE four lug axle shaft to a Grand-National stock car racing hub. HD hats feature a straight bell construction with a flanged rotor mount ring, Threaded-hole mounts for use with through hole rotors. When used with matching Wilwood rotor hardware, these hats provide solid mounting for a wide range of custom and competition disc brake applications.These features combine to provide maximum radial clearance between the caliper body and the hat. This can be a critical factor when trying to squeeze a large caliper inside a small wheel. Many hats offer multi-lug wheel patterns for added versatility. Some hats can be ordered blank for custom axle building and other unique applications.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Drag Hat - Standard
Item No 170-0357
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.14
Shoe I.D.
Face Thick 0.25
Price $114.28
Purchase
Call (805) 388-1188
Drag Hat - Standard
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 1.960
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Drag Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Standard

Drag Hat - Standard Drawing Drag Hat - Standard Drawing Zoom Image

Drag Hat - Standard Description

Wilwood's HD Series Fixed Mount Rotor Hats have a long standing reputation for fit, performance, and durability. HD Series hats are manufactured from premium grade aluminum alloys offering high strength, low weight, and show quality appeal. HD hats have not only been a mainstay in many of Wilwood's racing disc brake conversion kits, but they can cover a range of applications from an OE four lug axle shaft to a Grand-National stock car racing hub. HD hats feature a straight bell construction with a flanged rotor mount ring, Threaded-hole mounts for use with through hole rotors. When used with matching Wilwood rotor hardware, these hats provide solid mounting for a wide range of custom and competition disc brake applications.These features combine to provide maximum radial clearance between the caliper body and the hat. This can be a critical factor when trying to squeeze a large caliper inside a small wheel. Many hats offer multi-lug wheel patterns for added versatility. Some hats can be ordered blank for custom axle building and other unique applications.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Drag Hat - Standard
Item No 170-0208
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.14
Shoe I.D.
Face Thick 0.25
Price $109.08
Purchase
Call (805) 388-1188
Drag Hat - Standard
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 1.960
Wheel Stud Circle(s): 5 Holes  on 4.750      
Type: Drag Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Standard

Drag Hat - Standard Drawing Drag Hat - Standard Drawing Zoom Image

Drag Hat - Standard Description

Wilwood's HD Series Fixed Mount Rotor Hats have a long standing reputation for fit, performance, and durability. HD Series hats are manufactured from premium grade aluminum alloys offering high strength, low weight, and show quality appeal. HD hats have not only been a mainstay in many of Wilwood's racing disc brake conversion kits, but they can cover a range of applications from an OE four lug axle shaft to a Grand-National stock car racing hub. HD hats feature a straight bell construction with a flanged rotor mount ring, Threaded-hole mounts for use with through hole rotors. When used with matching Wilwood rotor hardware, these hats provide solid mounting for a wide range of custom and competition disc brake applications.These features combine to provide maximum radial clearance between the caliper body and the hat. This can be a critical factor when trying to squeeze a large caliper inside a small wheel. Many hats offer multi-lug wheel patterns for added versatility. Some hats can be ordered blank for custom axle building and other unique applications.
NOTE & CAUTIONS:

Ordering Information for Drag Hat - Standard
Item No 170-12529
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.750 / 0.500 
I.D. Clear(in) 6.14
Shoe I.D.
Face Thick 0.25
Price $109.08
Purchase
Call (805) 388-1188
Drag Hat - Standard
Rotor Bolt Circle: 8 x 7.00
Hat Offset: 1.960
Wheel Stud Circle(s): 5 Holes  on 4.750  ;  5.000   
Type: Drag Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Drag Hat - Standard

Drag Hat - Standard Drawing Drag Hat - Standard Drawing Zoom Image

Drag Hat - Standard Description

Wilwood's HD Series Fixed Mount Rotor Hats have a long standing reputation for fit, performance, and durability. HD Series hats are manufactured from premium grade aluminum alloys offering high strength, low weight, and show quality appeal. HD hats have not only been a mainstay in many of Wilwood's racing disc brake conversion kits, but they can cover a range of applications from an OE four lug axle shaft to a Grand-National stock car racing hub. HD hats feature a straight bell construction with a flanged rotor mount ring, Threaded-hole mounts for use with through hole rotors. When used with matching Wilwood rotor hardware, these hats provide solid mounting for a wide range of custom and competition disc brake applications.These features combine to provide maximum radial clearance between the caliper body and the hat. This can be a critical factor when trying to squeeze a large caliper inside a small wheel. Many hats offer multi-lug wheel patterns for added versatility. Some hats can be ordered blank for custom axle building and other unique applications.
NOTE & CAUTIONS:
Rotor Bolt Kit 230-0233D includes a short profile Hex Head Bolt for use with soild rotors, 230-2589 Bolt kit can be used in applications where additional clearance is available between bolt head and mount hardware.
Ordering Information for Drag Hat - Standard
Item No 170-5244
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.750 / 0.700 
I.D. Clear(in) 6.14
Shoe I.D.
Face Thick 0.25
Price $114.28
Purchase
Call (805) 388-1188
Pro-Street Hat - Standard
Rotor Bolt Circle: 8 x 7.62
Hat Offset: 2.000
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Pro-Street Hat - Standard
Mount Type: Fixed Mount
Material: Aluminum
Pro-Street Hat - Standard

Pro-Street Hat - Standard Drawing Pro-Street Hat - Standard Drawing Zoom Image

Pro-Street Hat - Standard Description

Wilwood's Pro Street Series Fixed Mount Rotor Hats have a long standing reputation for fit, performance, and durability. HD Series hats are manufactured from premium grade aluminum alloys offering high strength, low weight, and show quality appeal. HD hats have not only been a mainstay in many of Wilwood's racing disc brake conversion kits, but they can cover a range of applications from an OE four lug axle shaft to a Grand-National stock car racing hub. Pro Street hats feature a straight bell construction with a flanged rotor mount ring, with through holes for use with threaded-hole, 8 x 7.62 mount rotors. These features combine to provide maximum radial clearance between the caliper body and the hat. This can be a critical factor when trying to squeeze a large caliper inside a small wheel. Many hats offer multi-lug wheel patterns for added versatility. Some hats can be ordered blank for custom axle building and other unique applications.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Pro-Street Hat - Standard
Item No 170-1827
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.50
Shoe I.D.
Face Thick 0.25
Price $114.09
Purchase
Call (805) 388-1188
Dynamic Drag Hat - Lug Drive
Rotor Bolt Circle: 8Lug-7.18
Hat Offset: 1.410
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Dynamic Drag Hat - Lug Drive
Mount Type: Dynamic Lug Mount
Material: Aluminum
Dynamic Drag Hat - Lug Drive

Dynamic Drag Hat - Lug Drive Drawing Dynamic Drag Hat - Lug Drive Drawing Zoom Image

Dynamic Drag Hat - Lug Drive Description

Wilwood's new Lug Drive Dynamic hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-12561 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Dynamic Drag Hat - Lug Drive
Item No 170-12430
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.20
Shoe I.D.
Face Thick 0.25
Price $189.13
Purchase
Call (805) 388-1188
Dynamic Drag Hat - Lug Drive
Rotor Bolt Circle: 8Lug-7.18
Hat Offset: 1.590
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Dynamic Drag Hat - Lug Drive
Mount Type: Dynamic Lug Mount
Material: Aluminum
Dynamic Drag Hat - Lug Drive

Dynamic Drag Hat - Lug Drive Drawing Dynamic Drag Hat - Lug Drive Drawing Zoom Image

Dynamic Drag Hat - Lug Drive Description

Wilwood's new Lug Drive Dynamic hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-12561 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Dynamic Drag Hat - Lug Drive
Item No 170-12426
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.20
Shoe I.D.
Face Thick 0.25
Price $189.13
Purchase
Call (805) 388-1188
Dynamic Drag Hat - Lug Drive
Rotor Bolt Circle: 8Lug-7.18
Hat Offset: 1.640
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Dynamic Drag Hat - Lug Drive
Mount Type: Dynamic Lug Mount
Material: Aluminum
Dynamic Drag Hat - Lug Drive

Dynamic Drag Hat - Lug Drive Drawing Dynamic Drag Hat - Lug Drive Drawing Zoom Image

Dynamic Drag Hat - Lug Drive Description

Wilwood's new Lug Drive Dynamic hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-12561 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Dynamic Drag Hat - Lug Drive
Item No 170-12544
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.20
Shoe I.D.
Face Thick 0.25
Price $189.13
Purchase
Call (805) 388-1188
Dynamic Drag Hat - Lug Drive
Rotor Bolt Circle: 8Lug-7.18
Hat Offset: 1.960
Wheel Stud Circle(s): 5 Holes  on 4.750  ;  5.000   
Type: Dynamic Drag Hat - Lug Drive
Mount Type: Dynamic Lug Mount
Material: Aluminum
Dynamic Drag Hat - Lug Drive

Dynamic Drag Hat - Lug Drive Drawing Dynamic Drag Hat - Lug Drive Drawing Zoom Image

Dynamic Drag Hat - Lug Drive Description

Wilwood's new Lug Drive Dynamic hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-12561 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Dynamic Drag Hat - Lug Drive
Item No 170-12431
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.750 / 0.700 
I.D. Clear(in) 6.20
Shoe I.D.
Face Thick 0.25
Price $189.13
Purchase
Call (805) 388-1188
Dynamic Drag Hat - Lug Drive
Rotor Bolt Circle: 8Lug-7.18
Hat Offset: 1.960
Wheel Stud Circle(s): 5 Holes  on 4.500  ;  4.750  ;  5.000
Type: Dynamic Drag Hat - Lug Drive
Mount Type: Dynamic Lug Mount
Material: Aluminum
Dynamic Drag Hat - Lug Drive

Dynamic Drag Hat - Lug Drive Drawing Dynamic Drag Hat - Lug Drive Drawing Zoom Image

Dynamic Drag Hat - Lug Drive Description

Wilwood's new Lug Drive Dynamic hats incorporate a new rotor mounting system that eliminates the rotor bolts and allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion, including bolt hole alignment issues when trying to re-install new rotors on a previously used hat, are eliminated.
NOTE & CAUTIONS:
300-12561 Dynamic Lug Mount Clip & Snap Ring kit are required for rotor mounting.
Ordering Information for Dynamic Drag Hat - Lug Drive
Item No 170-12429
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.500 / 0.520 
I.D. Clear(in) 6.20
Shoe I.D.
Face Thick 0.25
Price $189.13
Purchase
Call (805) 388-1188

All images shown are for illustrative purposes only. Actual product received may be different than what is portrayed on the web site.
Wilwood makes every effort to maintain our web site to ensure the accuracy of prices and product information. However, product information and prices are subject to change without notice. Please call (805) 388-1188 before ordering to verify current prices and product information.
Copyright © 1977 - 2024 Wilwood Engineering, Inc. - All Rights Reserved
Version: 3.05 June 23, 2023
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