Wilwood Rear SRP Brake Conversion, Black D154 Calipers, Buick Apollo/Pontiac Beaumont/Oldsmobile 442/Chevrolet Camaro/Chevelle (1964–1974), 12-Bolt C-Clip Axle

Black D154 calipers and drilled/slotted SRP rotors are paired with parking shoes in this Wilwood C-clip 12-bolt rear kit. The 12.19-inch rotors require the stated 2.75–2.81-inch axle-offset range and matching flange. Vehicle model coverage remains conditional on those measurements rather than a front-spindle conversion. 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. Its product range serves motorsport, street-performance, and specialized applications, with individual components selected to match the requirements of the complete brake system.

Technical Details

• Manufacturer part number: 140-12215-D
• Type: D154 Rear Parking Brake Kit
• Calipers: D154; 2 pistons per caliper; Black Powder Coat; floating mounting.
• Piston bores: 1.12, 1.12 inches; Stainless pistons. Included pad compound: BP-10.
• Rotors: 12.19-inch diameter × 0.81-inch width; SRP Drilled & Slotted; Iron; Black Electro Coat finish.
• Rear housing end: 12 Bolt. Axle-flange offset: 2.75 - 2.81 inches.
• Included: paired hydraulic calipers, pads, rotor/hat assemblies, internal parking-shoe assemblies and mounting components.
• Hydraulic flex lines are separate. Master cylinder, booster and spindles are not included; retain or select suitable matching components.
• Conditional minimum wheel diameter: 16 inches. Verify the complete clearance drawing for barrel and spoke offset before purchase.

Fitment & Compatibility

Compare the installed rear end to DS860 before applying the Apollo, Beaumont, 442, Camaro or Chevelle entries. Their Ridetech front-spindle notes are not rear axle dimensions and require separate rear-fit confirmation. Check flange size and wheel studs before installing the rotor hats and parking assemblies. Add compatible brake hoses and cable connections independently. The conditional minimum wheel diameter is 16 inches, with some 15-inch designs possible only when the full template clears.

Check the individual year, model, submodel and equipment conditions in the fitment table below before ordering.

Wilwood installation documents: Installation instructions; Technical bulletin.

PMB Performance has over 20 years of brake-system experience. Contact us with your vehicle, axle or spindle details and wheel measurements for fitment help.

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.