Front Brake Kit – Part No: 140-12576-D
Call (805) 388-1188
Forged Narrow Superlite 4R Big Brake Front Brake Kit (Hat)
Prod #: 140-12576-D
Price: $1,358.75
Front Brake Kit — 140-12576-D


Kit Contents
Wilwood Forged Narrow Superlite 4R Big Brake Front Brake Kit (Hat) Parts Laid Out - Black Powder Coat Caliper - SRP Drilled & Slotted Rotor Wilwood Forged Narrow Superlite 4R Big Brake Front Brake Kit (Hat) Parts Laid Out - Black Powder Coat Caliper - SRP Drilled & Slotted Rotor Zoom Image


View Custom Caliper Colors

Kit Summary
Spindle Type: Factory Disc Spindle
Mount Type: Radial
Caliper Type: 4 - Black Powder Coat
Rotor Diameter: 12.19
Min Wheel Diameter Req'd*: 16
*This Brake Kit may fit 16-inch wheels. Please refer to the wheel clearance diagram to check to see if it will fit your specific wheel. Wheel Clearance Diagram
UPC Number
UPC 889545017007

WARNING: Cancer and Reproductive Harm
www.P65Warnings.ca.gov
Applicable to Brake Pads Only


Forged Narrow Superlite 4R Big Brake Front Brake Kit (Hat)

The unsurpassed braking capacity of the Forged Narrow Superlite 4R four-piston caliper serves as the base of this 12.19” big rotor kit for these popular 84-89 Jeep YJ model vehicles (including Cherokee, Comanche, Wrangler and Wagoneer). Kits also can be fitted to select 1990 to 2006 YJ & TJ vehicles if retrofitted to the earlier 84-89 YJ spindle and hub assembly. FNSL4 kits are engineered application specific for simplified installation and full compatibility with OE master cylinder output and ABS functions where used. Big brake kits provide increased brake capacity and complimentary style with wheel, tire, and suspension upgrades. Optional caliper finishes and rotor designs simplify personalizing the style and braking requirements of any application.

Watch more videos!
Jeep Wrangler Front Disc Brake Install

Fitment & Installation Details


Forged Narrow Superlite 4R Big Brake Front Brake Kit (Hat) Assembly Schematic

Forged Narrow Superlite 4R Big Brake Front Brake Kit (Hat) Assembly Schematic Forged Narrow Superlite 4R Big Brake Front Brake Kit (Hat) Assembly Schematic Zoom Image


Compatible Vehicles for this Brake Kit
BRAKE KIT:   Forged Narrow Superlite 4R Big Brake Front Brake Kit (Hat)
SPINDLE TYPE:  
Factory Disc Spindle;
This Brake Kit is Compatible with the Following Vehicle Makes: Jeep

Note: Kit may fit other vehicles, call Wilwood Sales⁄Tech Support at (805) 388-1188 for more information.
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Caution
Caution THIS BRAKE KIT HAS A HUB OFFSET OF:
This Hub Offset will move the wheels inward or outward from the fender by this amount on each side of the vehicle
NOTE: Check "Figure 2. Wheel Clearance Diagram" in the installation Instructions below to verify you have adequate wheel clearance for this kit.

Wheel Clearance Assembly Instructions

Wheel Clearance Diagram Wheel Clearance Diagram Zoom Image



Assembly Instructions
Notes
1. Kit will fit 1990 thru 2006 YJ & TJ Series vehicles with conversion to 87-89 YJ Series spindles and hub assembles.

Kit Components & Specifications
Calipers
Left Hand - Part No: 120-11784-BK
Right Hand - Part No: 120-11784-BK
Type: Forged Narrow Superlite 4R
Finish Color: Black Powder Coat
Piston Count: 4
Piston 1 Bore (in): 1.75
Piston 2 Bore (in): 1.75
Piston Area (In²): 4.80
Piston Type: Stainless
Mount Type: Radial
Brake Pad Plate: 7416
Brake Pad Area (In²): 8.2
Brake Pad Volume (In³): 3.8
Pad Compound: BP-10
Forged Narrow Superlite 4R Caliper - Black Powder Coat Forged Narrow Superlite 4R Caliper - Black Powder Coat Zoom Image
Rotors
Left Hand - Part No: 160-12205-BK
Right Hand - Part No: 160-12204-BK
Type: SRP Drilled Rotor
Style: SRP Drilled & Slotted
Surface Finish: Black Electro Coat
Material: Iron
Outside Diameter (in): 12.19
Width (in): 1.10
Vane Count: 32 V
Design Type: SRP-BLK
Bedded: No
Dynamically Balanced: Yes
SRP Drilled Rotor - Iron - Black Electro Coat SRP Drilled Rotor - Iron - Black Electro Coat Zoom Image
Rotor Hats
Hat - Part No: 170-12575
Type: Drag Hat - Standard
Material: Aluminum
Finish Color: Black E-Coat
Hat Offset Dimension (in): 1.680
Bolt Circle 1: 5 X 4.50
Bolt Circle 2:
Bolt Circle 3:
Stud Diameter - BC 1: 0.630
Stud Diameter - BC 2: 0.000
Stud Diameter - BC 3: 0.000
Drag Hat - Standard - Aluminum - Black E-Coat Drag Hat - Standard - Aluminum - Black E-Coat Zoom Image
Hubs
Hub - Part No:
Type:
Material:
Finish Color:
Mount Style:
Bolt Circle 1:
Bolt Circle 2:
Bolt Circle 3:
Stud Diameter - BC 1:
Stud Diameter - BC 2:
Stud Diameter - BC 3:

Parts & Accessories
Caliper Parts
O-ring Kit: 130-2655
Replacement Dustboot: N-A
Replacement Piston 1: 200-7528
Replacement Piston 2: 200-7528
Replacement Piston 3: N-A
Replacement Piston 4: N-A
CrossOver O-Ring Kit: 130-10540
Crossover Tube: N-A
Self-Bleeder Tube: N-A
Bridge Bolt Kit: 230-17553
Wear Plate - Left Hand: 300-6596
Wear Plate - Right Hand: 300-6595
Pad Retainer: N-A
Bleed Screw Kit: 220-0627
*Brake Lines Needed
Front Line Kit:
 Front Line Kit:
 		220-12763
 220-15754
Hat
Bolt Kit: 230-0233D
Hub
Bolt Kit:
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Version: 3.05 June 23, 2023