Wilwood Front Dynalite Drilled Drag Brake Kit for GM Passenger Cars (1970–1978), 10.75-Inch Solid Rotors

This Wilwood front drag package is built around the GM disc spindle originally used with an 11-inch rotor. Forged Dynalite four-piston calipers clamp drilled 10.75-inch solid steel friction rings on replacement hubs. The smaller race rotor does not mean that any factory spindle with a similar bolt pattern will fit. 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: 140-1019-BD
• Type: Forged Dynalite Front Drag Brake Kit
• Calipers: Forged Dynalite Internal; 4 pistons; Type III Anodize.
• Bores: 1.75, 1.75 inches. Pads: BP-10.
• Rotors: 10.75-inch diameter × 0.35-inch width; Drilled, Steel, Black Oxide. Solid, unvented.
• Wheel mounting change from OE: +.13 inches per side.
• Hubs: Hub - Solid Rotor Offset; Aluminum; Bare.
• Wheel bolt circles: 5 x 4.50; 5 x 4.75 inches.
• Included: paired calipers, pads, rotors, brackets and assembly hardware, replacement hubs.
• Not included: hydraulic lines, master cylinder, booster or spindles. Reuse suitable matching components.
• Conditional wheel minimum: 15 inches. Check the clearance drawing for barrel and spoke offset.
• Application-use guidance: For use on cars up to 2800 pounds with rear discs or on cars up to 2400 pounds with rear drums. Confirm vehicle weight and brake configuration with Wilwood for the completed installation.

Fitment & Compatibility

Confirm the model/year row and the original 11-inch rotor spindle, then review DS193 for the required spindle modifications. The package changes the wheel mounting offset by +0.13 inches at each side. Check tire position, hub registration and wheel-stud compatibility before assembly. Hydraulic lines are separate, and the wheel-clearance template must be compared with the intended wheel profile.

Match the individual model, year, submodel and brake configuration in the fitment table below.

PMB Performance has over 20 years of brake-system experience. Contact us with the vehicle and installed hardware details 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.