Rear Brake Kit – Part No: 140-14879
Call (805) 388-1188
Forged Narrow Superlite 4R Big Brake Rear Brake Kit (Race)
Prod #: 140-14879
Price: $1,848.00

*Line Kit Needed


220-8177
$77.72
Rear Brake Kit - Rear Kit

Wilwood Forged Narrow Superlite 4R Big Brake Rear Brake Kit (Race) - Type III Ano Caliper - GT Slotted Rotor Wilwood Forged Narrow Superlite 4R Big Brake Rear Brake Kit (Race) - Type III Ano Caliper - GT Slotted Rotor Zoom Image

Kit Contents
Wilwood Forged Narrow Superlite 4R Big Brake Rear Brake Kit (Race) Parts Laid Out - Type III Ano Caliper - GT Slotted Rotor Wilwood Forged Narrow Superlite 4R Big Brake Rear Brake Kit (Race) Parts Laid Out - Type III Ano Caliper - GT Slotted Rotor Zoom Image


View Custom Caliper Colors

Kit Summary
Rear End Axle: OEM
Axle Offset: 0.00
Mount Type: Radial
Caliper Type: 4 - Type III Ano
Rotor Diameter: 12.88
Min Wheel Diameter Req'd*: 17
*This Brake Kit may fit 17-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 889545085921

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


Forged Narrow Superlite 4R Big Brake Rear Brake Kit (Race)

FNSL4R rear race kits provide high capacity braking for dedicated track use on Corvettes and other purpose built vehicles equipped with 1988-1996 C4 Corvette rear suspension. The parking brake is eliminated and the original equipment single piston combination caliper is replaced with a high efficiency, forged aluminum, fixed radial mount narrow four piston Superlite caliper. The forged caliper bodies feature a Type III Mil-Spec, medium gray color hard anodized finish. Hard anodizing provides superior wear resistance in the piston bores and high resistance to abrasion and corrosion throughout. Stainless steel pistons with internal damping springs are used with controlled retraction, high temperature seals for long term durability and consistent performance during extreme duty use. The caliper piston volume is fully compatible and matched to the output of the OE master cylinder on production based Corvettes, and easily configured with balance bar manual brake pedals in non-OE based purpose built race vehicles. The calipers are coupled with weight-saving two-piece rotor assemblies using 12.88” diameter Spec37 alloy direction vane GT series rotors mounted to the OE hubs with forged aluminum hats. High-temperature, high friction, endurance race compound brakes pads are specifically selected per application to provide high brake torque with smooth driver control and long wear in sustained high temperature competition.


Fitment & Installation Details

Forged Narrow Superlite 4R Big Brake Rear Brake Kit (Race) Assembly Schematic

Forged Narrow Superlite 4R Big Brake Rear Brake Kit (Race) Assembly Schematic Forged Narrow Superlite 4R Big Brake Rear Brake Kit (Race) Assembly Schematic Zoom Image

Rear End / Axle Housing Flange
Confirm The Configuration!

OEM Flange
Confirm Offset Measurement!

Axle Flange Cross-Section
Search Rear Kits By Rear End/Axle Offset
caution AXLE OFFSET: 0.00
Check the diagram above and verify this measurement. This kit may be available in several different offsets.
Please call Wilwood with any questions: (805) 388-1188

Wheel Clearance Assembly Instructions

Wheel Clearance Diagram Wheel Clearance Diagram Zoom Image




Assembly Instructions
Notes
1. Road Race kits contain high temperature racing pads. Extended low temperature use will cause premature rotor and pad wear.
2. Production chassis Corvettes require flexline kit 220-8177 for installation.
3. Custom built vehicles using adapted 1988-1996 Corvette suspension must specify the required line length.


Compatible Vehicles for this Brake Kit

BRAKE KIT:   Forged Narrow Superlite 4R Big Brake Rear Brake Kit (Race)

This Brake Kit is Compatible with the Following Vehicle Makes:   Chevrolet

Note: Kit may fit other vehicles, call Wilwood Sales⁄Tech Support at (805) 388-1188 for more information.

REAR END:   OEM - Rear Kit

AXLE OFFSET:   0.00

For a Complete Listing including ALL Makes, Models and Years, Please click on the Axle Offset.


Kit Components & Specifications
Calipers
Left Hand - Part No: 120-11782
Right Hand - Part No: 120-11782
Type: Forged Narrow Superlite 4R
Finish Color: Type III Ano
Piston Count: 4
Piston 1 Bore (in): 1.12
Piston 2 Bore (in): 1.12
Piston Area (In²): 1.98
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-30
Forged Narrow Superlite 4R Caliper - Type III Ano Forged Narrow Superlite 4R Caliper - Type III Ano Zoom Image
Rotors
Left Hand - Part No: 160-12962
Right Hand - Part No: 160-12961
Type: GT 48 Curved Vane
Style: GT Slotted
Surface Finish: Plain
Material: Spec-37 Iron
Outside Diameter (in): 12.88
Width (in): 1.10
Vane Count: 48 CV
Design Type: GT
Bedded: No
Dynamically Balanced: Yes
GT 48 Curved Vane - Spec-37 Iron - Plain GT 48 Curved Vane - Spec-37 Iron - Plain Zoom Image
Rotor Hats
Hat - Part No: 170-6837
Type: Big Brake Hat - Short Offset
Material: Aluminum
Finish Color: Black E-Coat
Hat Offset Dimension (in): 0.880
Bolt Circle 1: 5 x 4.50
Bolt Circle 2: 5 x 4.75
Bolt Circle 3:
Stud Diameter - BC 1: 0.560
Stud Diameter - BC 2: 0.520
Stud Diameter - BC 3: 0.000
Big Brake Hat - Short Offset - Aluminum - Black E-Coat Big Brake Hat - Short Offset - 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: 130-2579
Replacement Dustboot: N-A
Replacement Piston 1: 200-8439
Replacement Piston 2: 200-8439
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: 230-7710
Wear Plate - Left Hand: 300-6596
Wear Plate - Right Hand: 300-6595
Pad Retainer: N-A
Bleed Screw Kit: 220-0627
Brake Lines
Front Line Kit:
220-8177
Hat
Bolt Kit: 230-4572
Hub
Bolt Kit:

Additional related products:




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Version: 1.4.5 October 2020