Wilwood Rear Red D154 Caliper and Drilled-Rotor Assembly for Staggered-Shock 12-Bolt Axles, Chevelle/442/Beaumont/Camaro/Apollo (1964–1974)

Red D154 calipers and drilled/slotted rotors distinguish this rear parking-brake conversion for the specified staggered-shock Chevrolet 12-bolt arrangement. Its 12.19-inch rotors work with two-piston calipers and internal parking-shoe assemblies. A verified 2.81-inch axle offset and the correct special housing flange are required, making physical axle identification more important than a matching vehicle name. 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: 140-13025-DR
• Type: D154 Rear Parking Brake Kit.
• Calipers: D154; 2-piston; Red Powder Coat.
• Piston bore dimensions: 1.12, 1.12 inches; stainless pistons. Caliper mounting: floating.
• Included pad compound: BP-10.
• Rotors: 12.19-inch outside diameter × 0.81-inch width; SRP Drilled & Slotted; Iron; Black Electro Coat surface finish.
• Rotor ventilation: 32 vanes.
• Rear housing end: 12 Bolt Special; axle offset: 2.81 inches.
• Wheel bolt pattern: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm; 5 x 5 in; 5 x 127 mm.
• Included: paired calipers, pads, rotors and mounting hardware, caliper mounting brackets, 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: 16 inches. Compare the complete wheel-clearance diagram with both barrel and spoke dimensions.

Fitment & Compatibility

Measure the axle flange and offset and compare shock clearance with the exact installation drawing. The side-specific brackets place the right rear caliper behind the axle and the left rear caliper ahead of it. Do not use front Ridetech spindle options as proof of rear fitment; the listed vehicle rows require confirmation. Obtain hydraulic hoses and parking cable connections separately. Check rotor freedom, shoe adjustment and wheel-template clearance, then review rear braking balance with the front 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.