Rear Brake Kit – Part No: 140-10638
Call (805) 388-1188
Forged Narrow Superlite 4R Big Brake Rear Brake Kit (Race)
Prod #: 140-10638
Price: $2,066.39

*Line Kit Needed


220-8177
$73.56
*Line Kit Needed


220-9101
$66.61
Rear Brake Kit - Rear Kit

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 889545009811

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


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

Forged Narrow Superlite 4R/ST four piston radial mount race caliper rear kits are the engineered match for the AERO6R/ST front race kits on vehicles intended for unrestricted road race competition. All emphasis is on matched front to rear balance, high durability, and high efficiency heat management, without adding unnecessary rotating or unsprung weight to the driveline and rear suspension. FNSL4R/ST calipers use a forged aluminum body and 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. Thermlock® pistons are used to reduce heat transfer from the pads to increase fade resistance, and extend service life by decreasing temperatures in the caliper body, fluid, and seals. Internal damper springs and controlled retraction, high-temperature piston seals assure consistent pedal height from start to finish. Caliper piston volumes are matched for full compatibility with the OE master cylinder output and ABS controls. The calipers are also fully compatible with manual brake conversions to balance bar pedals using appropriately sized master cylinders. Spec37 alloy GT series directional vane 12.88” rotors are dynamically mounted to the OE hubs with weight saving forged aluminum hats. As is with the calipers, the hats are hard anodized for superior wear resistance and extended service life at the load bearing surfaces. Mounting brackets, including all premium grade fasteners, secure the calipers to the uprights in the stock location with no modifications required. This championship proven system is completed with high temperature, high friction, race compound pads selected specifically by application. Installation requires the separate purchase of the stainless steel braided flexline kit that must be ordered according to the model year.

Chevrolet Corvette Rear Disc Brake Install

Fitment & Installation Details

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


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





Assembly Instructions
Notes
1. Road Race kits contain high temperature racing pads. Extended low temperature use will cause premature rotor and pad wear.
2. Kit may fit some 17" wheels. Check wheel clearance diagram in kit installation instructions before purchase.



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:   Cadillac Chevrolet Factory Five Racing

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: 120-12602
Right Hand - Part No: 120-12602
Type: Forged Narrow Superlite 4R
Finish Color: Type III Ano
Piston Count: 4
Piston 1 Bore (in): 1.25
Piston 2 Bore (in): 1.25
Piston Area (In²): 2.46
Piston Type: Thermlock
Mount Type: Radial
Brake Pad Plate: 7416
Brake Pad Area (In²): 8.2
Brake Pad Volume (In³): 3.8
Pad Compound: BP-30
Rotors
Left Hand - Part No: 160-13357
Right Hand - Part No: 160-13356
Type: GT 48 Curved Vane
Style: GT Slotted
Surface Finish: Plain
Material: Spec-37 Iron
Outside Diameter (in): 12.88
Width (in): 1.00
Vane Count: 48 CV
Design Type: GT
Bedded: No
Dynamically Balanced: Yes
Rotor Hats
Hat - Part No: 170-12985
Type: Big Brake Dynamic Hat - Short Offset
Material: Aluminum
Finish Color: Type III Anodize
Hat Offset Dimension (in): 0.703
Bolt Circle 1: 5 x 4.75
Bolt Circle 2:
Bolt Circle 3:
Stud Diameter - BC 1: 0.520
Stud Diameter - BC 2: 0.000
Stud Diameter - BC 3: 0.000
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: 130-2479
Replacement Dustboot: N-A
Replacement Piston 1: 200-11343
Replacement Piston 2: 200-11343
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:
Front Line Kit:
220-8177
220-9101
Hat
Bolt Kit: 230-6656
Hub
Bolt Kit:


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