Wilwood Front FNSL6R Calipers and 14.00-inch Drilled/Slotted Rotors - 1988–1996 Chevrolet Corvette C4 Kit, Black

SRP drilled/slotted rotors and BP-10 pads define this black-caliper C4 front version. It replaces the listed standard or heavy-duty original brakes with 14.00 x 1.10-inch rotors and radial-mounted six-piston calipers. Calipers, brake rotors, master cylinders, valves, fittings and brake lines are among the disc brake systems and components Wilwood Engineering designs and manufactures. The Camarillo, California company was founded by Bill Wood in 1977 and supports motorsport, street-performance and specialized applications. Each part must be selected to work with the complete brake system and its requirements.

Technical Details

Kit contents and separate parts

• Manufacturer part number: 140-9298-D
• Supply: one kit with brake components for both sides of the front axle
• Mounting hardware: included
• Hubs: not included
• Spindles, master cylinder and brake booster: not included
• Hydraulic hoses: not included
• Separate hose kit application reference: 220-8338; verify the vehicle connections and routing

Rotors and mounting dimensions

• Rotors: 14.00 in; 355.6 mm diameter x 1.10 in; 27.94 mm thick; vented Spec-37 Iron
• Friction faces: SRP Drilled & Slotted
• Rotor finish: Black Electro Coat
• Internal vanes: 72 curved
• Hats: aluminum; Black E-Coat; 0.880-inch hat offset
• 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
• Hat wheel-stud clearance holes: 0.560 / 0.520 in, corresponding to the listed hat patterns

Calipers and friction components

• Calipers: Forged Narrow Superlite 6R; 6 pistons per caliper
• Caliper finish: Black Powder Coat
• Body construction: Forged aluminum
• Piston material: stainless
• Caliper mounting: radial
• Hydraulic inlet: 1/8-27 NPT
• Included pad compound: BP-10
• Listed piston bore sizes: 1.38 / 1.12 / 1.12 in

Fitment & Compatibility

Check the 1988–1996 Corvette entries in the table below, covering the listed standard 12-inch and heavy-duty 13-inch original front brakes. The new package uses 14.00 x 1.10-inch rotors and retains the vehicle hubs; the holes in the hats do not convert their wheel pattern. Select the optional 220-8338 front flexlines and confirm routing. Use DS-538 for bracket positioning, rotor alignment and actual wheel clearance. Nominal minimum wheel diameter: 18 in; 457.2 mm. Compare the actual wheel barrel and spokes with the linked clearance drawing; diameter alone does not establish fit.

Installation documents

• Installation instructions

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.

For help matching the axle, spindle and brake components, contact PMB Performance. Our team brings over 20 years of experience in brakes and vehicle restoration.

Vehicle Applications

Application Notes

1. 14" Rotor
2. Line kit included (manufacturer): None
3. Front line-kit reference: 220-8338