Wilwood 1988–1996 Chevrolet Corvette C4 Front Kit — Red Superlite 6R, 12.88-inch SRP Drilled/Slotted

Red Superlite 6R calipers accompany patterned 12.88-inch discs for the C4 front axle. For 1988–1996 Chevrolet Corvette C4, Wilwood specifies red powder-coated 6-piston calipers and 12.88-inch SRP drilled-and-slotted rotors in this front package. Bill Wood founded Wilwood Engineering in 1977. From Camarillo, California, the company designs and manufactures disc brake systems and components including calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications. This kit should be matched to the hydraulic and mechanical requirements of the complete vehicle.

Package and installation requirements

• Front hydraulic line kit 220-8338 is listed separately.

Fitment & Compatibility

The six-piston front conversion is listed for Corvette C4 from 1988–1996 with either the factory standard 12-inch front brake option or the heavy-duty 13-inch front option. Both factory configurations lead to the kit’s specified 12.88-inch replacement rotor, rather than retaining either original rotor diameter. Its radial-mount Superlite 6R calipers need clearance behind the wheel spokes as well as around the barrel. Consult DS479 with the actual wheels and confirm the existing hub arrangement before installation. Front flexlines are separate and should be checked for steering clearance. Match the complete model-year and brake-option entry below when confirming the application.

Review the fitment table and numbered notes below together; a matching model name alone does not establish the installation.

Technical Details

• Manufacturer part number: 140-8337-DR.
• Rotor/hat wheel-stud clearance patterns: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm.
• Rotor/hat stud-hole clearance diameters: 0.560 in; 14.22 mm; 0.520 in; 13.21 mm. These are hole sizes, not wheel-stud thread specifications.
• The rotor/hat drilling does not change the vehicle hub or axle wheel bolt pattern.
• Rotor dimensions: 12.88 in; 327.15 mm diameter x 1.10 in; 27.94 mm thick.
• Rotor construction: Spec-37 Iron; vented; SRP Drilled & Slotted friction surface.
• Wheel-size guide: 17 in; 431.8 mm minimum nominal diameter; verify actual template clearance.
• Calipers: 6 pistons; forged aluminum; stainless steel pistons.
• Caliper attachment: radial mount; 1/8-27 NPT hydraulic inlet.
• Caliper finish: Red Powder Coat.
• Sold as one kit. Mounting hardware is included. Hubs are not included.
• Brake pads are included; use the compound and installation instructions specified for this rotor package.
• Spindles, master cylinder, brake booster and hydraulic brake lines are not included.

Manufacturer references

• Wilwood product and configuration information
• Installation instructions

For help selecting the correct package, contact PMB Performance with the installed brake and mounting details. Our team has over 20 years of experience with brake components and fitment.

WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.

Vehicle Applications

Application Notes

1. Line kit included (manufacturer): None
2. Front line-kit reference: 220-8338