Wilwood GT Front Disc Package with Red Superlite 6R Calipers, Chevrolet El Camino/Sedan Delivery/Corvette/Impala/Biscayne/Bel Air/Kingswood/Nomad/Brookwood/Parkwood (1959–1964), 12.88-Inch Rotors

Wilwood combines red Superlite 6R calipers and BP-20 pads with 12.88-inch GT slotted rotors in this front hub kit. The 48-vane iron rings attach to separate aluminum hats, with replacement hubs locating them on the specified Chevrolet spindles. The package is a brake conversion for the individual full-size-car and early Corvette entries rather than a universal spindle assembly. Wilwood Engineering was founded by Bill Wood in 1977 and is based in 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.

Technical Details

• Manufacturer part number: 140-12460-R
• Type: Forged Narrow Superlite 6R Big Brake Front Brake Kit (Hub)
• Calipers: Forged Narrow Superlite 6R; 6 pistons per caliper; Red Powder Coat.
• Caliper bore sizes: 1.75, 1.25, 1.25 inches. Piston type: Stainless.
• Included pad compound: BP-20.
• Rotors: 12.88-inch diameter × 1.10-inch thickness; GT Slotted; Spec-37 Iron; Black Electro Coat surface; 48 curved vanes.
• Wheel mounting change from OE: +.21 inches per side.
• Replacement hubs: Hub - Hat Mount; Aluminum; Bare.
• Wheel bolt circles: 5 x 4.50; 5 x 4.75 inches.
• Included: paired calipers, pads, rotors, mounting brackets and assembly hardware, replacement hubs, rotor hats.
• Hydraulic lines and fittings selected separately. No master cylinder, booster or spindles are supplied.
• Conditional wheel screening size: 17 inches. Use the installation clearance diagram to verify the actual barrel and spoke profile.

Fitment & Compatibility

Verify spindle geometry and bearings with DS903 before ordering. The hub's positive 0.21-inch wheel offset must be considered with backspacing and tire clearance. Confirm the selected lug pattern and full wheel-to-caliper clearance, including spokes. Hydraulic hoses remain separate, and the master cylinder needs sufficient displacement for the front calipers and chosen rear brakes. Follow the specified assembly and system test procedure.

Match the individual model, year, submodel and brake configuration in the fitment table below.

Wilwood installation documents: Installation instructions.

PMB Performance has over 20 years of brake-system experience. Contact us with your vehicle details and installed brake hardware for help confirming the correct arrangement.

California Proposition 65 warning, brake pads only: 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.