Front Brake Kit – Part No: 140-15952-D
Call (805) 388-1188
Forged Narrow Superlite 6R Big Brake Front Brake Kit (6 x 5.50 Hub and Rotor)
Prod #: 140-15952-D
Price: $1,436.38
Front Brake Kit — 140-15952-D


Kit Contents
Wilwood Forged Narrow Superlite 6R Big Brake Front Brake Kit (6 x 5.50 Hub and Rotor) Parts Laid Out - Black Powder Coat Caliper - SRP Drilled & Slotted Rotor Wilwood Forged Narrow Superlite 6R Big Brake Front Brake Kit (6 x 5.50 Hub and Rotor) Parts Laid Out - Black Powder Coat Caliper - SRP Drilled & Slotted Rotor Zoom Image


View Custom Caliper Colors

Kit Summary
OE Hub Offset: +0.04
(Increase / Decrease Track Width)
Spindle Type: Drop Spindle
Mount Type: Radial
Caliper Type: 6 - Black Powder Coat
Rotor Diameter: 12.19
Min Wheel Diameter Req'd*: 15
*This Brake Kit may fit 15-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 889545094527

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


Forged Narrow Superlite 6R Big Brake Front Brake Kit (6 x 5.50 Hub and Rotor)

The unsurpassed braking capacity of the Forged Narrow Superlite 6R six-piston caliper serves as the base of this 12.19” big rotor kit for the popular 1988 thru 1998 Chevrolet & GMC C1500 & C2500 Trucks using Wilwood's new 1 Piece Iron Drop Pro Spindles. FNSL6R 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. This kit contains hubs with a 6 x 5.50” bolt circle.


Fitment & Installation Details


Forged Narrow Superlite 6R Big Brake Front Brake Kit (6 x 5.50 Hub and Rotor) Assembly Schematic

Forged Narrow Superlite 6R Big Brake Front Brake Kit (6 x 5.50 Hub and Rotor) Assembly Schematic Forged Narrow Superlite 6R Big Brake Front Brake Kit (6 x 5.50 Hub and Rotor) Assembly Schematic Zoom Image


Compatible Vehicles for this Brake Kit
BRAKE KIT:   Forged Narrow Superlite 6R Big Brake Front Brake Kit (6 x 5.50 Hub and Rotor)
SPINDLE TYPE:  
Drop Spindle;
This Brake Kit is Compatible with the Following Vehicle Makes: Chevrolet GMC Wilwood

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: +0.04
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. Brake kits require Wilwood C10 1 Piece Iron Pro Drop Spindles to fit. Will not fit original equipment spindles.




Kit Components & Specifications
Calipers
Left Hand - Part No: 120-14540-BK
Right Hand - Part No: 120-14539-BK
Type: Forged Narrow Superlite 6R
Finish Color: Black Powder Coat
Piston Count: 6
Piston 1 Bore (in): 1.75
Piston 2 Bore (in): 1.25
Piston 3 Bore (in): 1.25
Piston Area (In²): 4.86
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 6R Caliper - Black Powder Coat Forged Narrow Superlite 6R Caliper - Black Powder Coat Zoom Image
Rotors
Left Hand - Part No: 160-15785-BK
Right Hand - Part No: 160-15784-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:
Type:
Material:
Finish Color:
Hat Offset Dimension (in):
Bolt Circle 1:
Bolt Circle 2:
Bolt Circle 3:
Stud Diameter - BC 1:
Stud Diameter - BC 2:
Stud Diameter - BC 3:
Hubs
Hub - Part No: 270-15790
Type: Hub - Hat Mount
Material: Aluminum
Finish Color: Bare
Mount Style: Hat
Bolt Circle 1: 6 x 5.50
Bolt Circle 2:
Bolt Circle 3:
Stud Diameter - BC 1: 1/2-20
Stud Diameter - BC 2:
Stud Diameter - BC 3:
Hub - Hat Mount - Aluminum - Bare Hub - Hat Mount - Aluminum - Bare Zoom Image

Parts & Accessories
Caliper Parts
O-ring Kit: 130-17361
Replacement Dustboot: N-A
Replacement Piston 1: 200-7528
Replacement Piston 2: 200-7515
Replacement Piston 3: 200-7515
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:
 		220-16439
Hat
Bolt Kit:
Hub
Bolt Kit: 230-7032

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Version: 3.05 June 23, 2023