Wilwood 14-Inch GT Front Brake & Hub Conversion, Chevrolet Parkwood/Kingswood/Brookwood/Nomad/Corvette/El Camino/Impala/Sedan Delivery/Bel Air/Biscayne (1959–1964), Black Superlite 6R

This 14-inch Wilwood front package uses black six-piston calipers with GT slotted Spec-37 rotors and BP-20 pads. Separate hats and replacement hubs mount the 72-curved-vane rings on the listed early Chevrolet spindles. The larger diameter requires an 18-inch wheel screening check, with the specific full-size-car or early Corvette application still governing spindle selection. 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: 140-12465
• Type: Forged Narrow Superlite 6R Big Brake Front Brake Kit (Hub)
• Calipers: Forged Narrow Superlite 6R; 6 pistons per caliper; Black Powder Coat.
• Caliper bore sizes: 1.75, 1.25, 1.25 inches. Piston type: Stainless.
• Included pad compound: BP-20.
• Rotors: 14.00-inch diameter × 1.10-inch thickness; GT Slotted; Spec-37 Iron; Black Electro Coat surface; 72 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: 18 inches. Use the installation clearance diagram to verify the actual barrel and spoke profile.

Fitment & Compatibility

Match the installation geometry to DS904 before disassembly. Replacement hubs move the wheel outward 0.21 inches on each side, so measure tire and fender clearance in addition to caliper room. Select the correct five-lug pattern and compare spoke depth with the full wheel outline. Hydraulic lines are separate, and the master-cylinder/pedal arrangement must be suitable for the total front and rear brake volume.

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.