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Product details
For the rear brakes of a 1965–1982 Chevrolet Corvette, this D8-4 uses four 1.38-inch stainless pistons in a forged aluminum housing. The smaller rear piston area is distinct from the front D8-4, despite their similar appearance. Bill Wood founded Wilwood Engineering in 1977, and the company is based in Camarillo, California. It designs and manufactures disc brake systems and a component range of calipers, brake rotors, master cylinders, valves, fittings and brake lines serving motorsport, street-performance and specialized installations.
Technical Details
- Manufacturer part number: 120-10526. Component: D8-4 Caliper Rear.
- Supply: one brake caliper, not a complete axle brake kit. Match the mating rotor, pads, bracket and connection hardware to the installation.
- Compatible brake pad shape: D8; choose the required compound for the brake system.
- Body: forged aluminum; finish: Type III anodize.
- Rotor compatibility: nominal width 1.25 inch; diameter 11.75 inches. Specified rotor-width limits: 1.17–1.25 inch.
- Caliper weight: approximately 6.3 lb.
- Hydraulic inlet thread: 1/8-27 NPT. Use a fitting with the correct thread and sealing seat.
- Piston dust boots: not fitted.
- Pistons: 4 stainless steel; bore specification: 1.38 inches. Effective piston area: 3.00 sq in.
- Mounting: lug, 5.16-inch centers; universal orientation. Mount holes: 0.47 inch; height: 2.99 inches.
Fitment & Compatibility
Install on the original rear mounting geometry with a stock-size 11.75-inch-diameter rotor of nominal 1.25-inch width. Verify the 5.16-inch mounting pattern and NPT hose connection; also inspect wheel clearance before finalizing the brake installation.
For a replacement or custom installation, send PMB Performance the brake dimensions and existing component identification. Our 20+ years of experience can help narrow down the correct combination.
