Wilwood Rear Superlite Parking Brake Kit, 12-Bolt C-Clip Axle, Chevelle/442/Beaumont/Camaro/Apollo (1964–1974), Black Calipers and GT Rotors

Black Superlite four-piston calipers and GT slotted 12.88-inch rotors form this rear parking-brake conversion for a verified Chevrolet 12-bolt housing with original C-clip axles. The rotor hats cover the included internal parking-shoe assemblies. Vehicle names in the application table must be treated as conditional: correct flange dimensions and the specified 2.75-inch axle offset establish the actual rear installation. 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
• 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; GT 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

Confirm the housing flange, bearing arrangement and measured axle offset before relying on a model/year row. Original C-clip axles are required; special housing ends and C-clip eliminators are excluded. Front Ridetech spindle options do not identify the rear axle and require application confirmation. Select compatible hydraulic lines and parking cables separately, checking their routing and adjustment. Use the full wheel template and verify front/rear brake balance before installing this rear package.

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.