Wilwood Drilled Rear Parking Brake Conversion, Chevelle/442/Beaumont/Camaro/Apollo (1964–1974), 12-Bolt C-Clip, Black Calipers

Drilled/slotted 12.88-inch rotors pair with black Superlite 4R calipers and internal parking shoes in this Wilwood rear axle package. The supported mounting geometry is the specified 12-bolt housing and original C-clip axle with 2.75-inch offset. It is a measured axle conversion rather than an unconditional direct replacement for every vehicle name shown in the application table. 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: 140-12964-D
• Type: Forged Narrow Superlite 4R Big Brake Rear Parking Brake Kit.
• Calipers: Forged Narrow Superlite 4R; 4-piston; Black Powder Coat.
• Piston bore dimensions: 1.12, 1.12 inches; stainless pistons. Caliper mounting: radial.
• Included pad compound: BP-10.
• Rotors: 12.88-inch outside diameter × 1.10-inch width; SRP Drilled & Slotted; Spec-37 Iron; Black Electro Coat surface finish.
• Rotor ventilation: 48 curved vanes.
• Rear housing end: 12 Bolt; axle offset: 2.75 inches.
• Rotor hats: Parking Brake Hat - Standard; Aluminum; Black E-Coat.
• Wheel bolt circles: 5 x 4.50; 5 x 4.75; 5 x 5.00 inches.
• Included: paired calipers, pads, rotors and mounting hardware, caliper mounting brackets, rotor hats, internal parking-shoe assemblies.
• Hydraulic flex lines are separate; select the correct fittings, length and route for the vehicle.
• Parking-brake cable connections are separate and must suit the vehicle.
• Conditional wheel minimum: 17 inches. Compare the complete wheel-clearance diagram with both barrel and spoke dimensions.

Fitment & Compatibility

Measure the flange and axle offset using the manufacturer's worksheet and identify the bearing arrangement. The kit does not support special ends or C-clip eliminator modifications. Confirm the listed vehicle applications independently because their front-spindle notes do not establish rear-axle fitment. Hydraulic lines and suitable parking cable connections are separate selections. Check shoe adjustment, rotor/caliper alignment and wheel-template clearance, then assess the rear conversion with the vehicle's front brake and hydraulic configuration.

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

Wilwood installation documents: Installation instructions, Technical bulletin.

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.