Wilwood Red Six-Piston Front Hub Conversion for Chevrolet Biscayne/Bel Air/Impala/Corvette/Sedan Delivery/El Camino/Parkwood/Brookwood/Nomad/Kingswood (1959–1964), 12.88-Inch SRP Rotors

Red radial calipers and drilled/slotted 12.88-inch Spec-37 rings form this Wilwood six-piston front conversion. The package includes BP-10 pads, separate rotor hats and replacement hubs for the stated early Chevrolet spindle arrangements. It must be matched to the listed application and installed hardware, especially on cars whose front suspension has already been modified. 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-DR
• 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-10.
• Rotors: 12.88-inch diameter × 1.10-inch thickness; SRP Drilled & 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

Check DS903 against the spindle and bearing layout, and select the hub's correct wheel bolt circle. Positive 0.21-inch wheel offset alters track independently of brake clearance. Compare the chosen wheel's barrel and spokes with the 17-inch screening diagram. Hydraulic hoses must be selected separately and routed clear through steering movement; master-cylinder displacement and rear brake balance need assessment for the complete conversion.

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.