Wilwood Front Dynapro Radial Brake Kit, Black Calipers and 11.75-Inch Plain Rotors with Aluminum Hubs for GM AFX ProSpindle Applications (Listed 1964–1974 Applications)

Four-piston Dynapro radial calipers mount over two-piece 11.75-inch plain rotors in this black-caliper AFX ProSpindle kit. Separate aluminum hubs, rotor adapters and BP-10 pads are supplied for the listed GM applications using that spindle. Select the package by the installed spindle and wheel pattern before considering the vehicle's model/year. Flexible brake lines must be purchased separately for this configuration. Bill Wood founded Wilwood Engineering in 1977; the company is based in Camarillo, California. It designs and manufactures calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications. This kit is one configuration within that disc-brake-system range and must be matched to the vehicle build.

Technical Details

• Manufacturer part number: 140-15909. Quantity: one kit for the stated axle/application.
• Minimum nominal wheel diameter: 15 inches. The wheel must also clear the actual caliper and rotor profile in the installation drawing.
• Rotor specification: 11.75-inch outside diameter × 0.81-inch thickness; plain faces. Iron construction; Ultralite HP 30 design; published vane configuration: 32 V.
• Supplied hub assembly: Hub - Vented Rotor Offset, aluminum, bare finish.
• Wheel mounting patterns: 5 x 4.50; 5 x 4.75 inches.
• Service caliper: Dynapro Radial Mount; 4 pistons; stainless piston material. Radial mounting, black powder coat finish.
• Published piston bores: 1.75, 1.75 inches. Supplied pad compound: BP-10.
• Caliper hydraulic inlet: 1/8-27 NPT.
• Brake hoses are not included. Manufacturer line-kit reference(s), sold separately: 220-7056.
• Mounting hardware and the specified pads are included. Spindles, master cylinder and brake booster are not supplied.

Fitment & Compatibility

Use only with the documented Wilwood AFX ProSpindles on the listed GM A-, F- and X-body applications. The manufacturer identifies the primary groups as 1964–1972 A-body, 1967–1969 F-body and 1968–1974 X-body; individual rows retain their specific year and model limits. The required aftermarket spindles are not included, and original spindles are not an equivalent interface. Verify wheel-bolt pattern, hub contact surface, caliper clearance and the completed hydraulic balance. The wheel mounting surfaces must seat fully on the hub; follow the installation sheet’s spacer requirement if a wheel contact surface overhangs the hub face. Use the complete application table below for the individual year, submodel, brake configuration and note attached to each entry.

With over 20 years of parts and fitment experience, PMB Performance can help compare the required mounting interface with the vehicle build. Share spindle or axle measurements and wheel information before ordering if anything is uncertain.

Manufacturer documentation: Installation instructions.

Manufacturer Warning

Applicable to brake pads only: Wilwood warns of exposure to arsenic, cadmium, hexavalent chromium compounds, lead, nickel, cobalt and antimony trioxide, chemicals known to California to cause cancer or reproductive harm. More information: P65Warnings.ca.gov.