Wilwood Front Dynapro 6 Brake/Hub Kit for Bel Air/Biscayne/Caprice/Impala/Brookwood/Corvette/Kingswood/Townsman/Estate (1968–1982), Black Calipers and Plain Rotors

Black Dynapro six-piston calipers, plain 12.19-inch rotors and replacement hubs form this Wilwood front conversion for the specified Chevrolet applications. The selected rotor width is 1.10 inches, and the package includes BP-10 pads and mounting hardware. Coverage distinguishes the original drum/disc spindles on full-size cars from the listed C3 Corvette arrangement, so those mounting details must be verified directly. 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: 140-12946
• Type: Forged Dynapro 6 Big Brake Front Brake Kit (Hub).
• Calipers: Dynapro 6; 6-piston; Black Powder Coat.
• Piston bore dimensions: 1.62, 1.38, 1.38 inches; stainless pistons. Caliper mounting: lug.
• Included pad compound: BP-10.
• Rotors: 12.19-inch outside diameter × 1.10-inch width; Plain Face; Iron; Plain surface finish.
• Rotor ventilation: 32 vanes.
• Wheel-mounting change from OE: +0.28 inch per side.
• Replacement hubs: Hub - Vented Rotor Offset; Aluminum; Bare.
• Wheel bolt circles: 5 x 4.50; 5 x 4.75 inches.
• Included: paired calipers, pads, rotors and mounting hardware, caliper mounting brackets, replacement hubs and bearing hardware.
• Hydraulic flex lines are separate; select the correct fittings, length and route for the vehicle.
• Conditional wheel minimum: 15 inches. Compare the complete wheel-clearance diagram with both barrel and spoke dimensions.
• Conditional wheel support: if the wheel contact face overhangs the new hub, the separately sold 6.60-inch-diameter × 0.20-inch-thick steel support spacer specified in the linked installation instructions is required. Check full seating before assembly. For stamped steel wheels without overhang, Wilwood recommends a separate 6.15-inch-diameter × 0.09-inch-thick hub shield.

Fitment & Compatibility

Read the model-year and original brake-equipment row, including the single-piston power-disc exclusion where listed. Compare the actual spindle to the assembly instructions before fitting the new hubs. Account for the published 0.28-inch outward wheel-mounting change per side in tire and fender measurements. Use the full clearance drawing for the wheel's spokes and barrel. Choose hydraulic hoses separately and confirm caliper alignment, steering freedom and rear-brake proportioning after assembly.

Match the individual year, model, submodel and equipment conditions in the fitment table below.

Wilwood installation documents: Installation instructions.

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

Manufacturer 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.