Wilwood Front Four-Piston Drilled Drag Brake Kit for Ford Pinto/Mustang II and Mercury Bobcat (1971–1980)

Forged Dynalite four-piston calipers and 10.75-inch drilled steel rotors form this Wilwood front drag package. Aluminum five-lug hubs replace the original hub arrangement on the specified Ford/Mercury spindles. Its solid 0.35-inch friction rings serve a competition setup and should be matched to the car's intended braking duty. 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: 140-1013-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: +.41 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

Verify the individual Pinto, Mustang II or Bobcat year and spindle type in the fitment table. This five-lug conversion is not a direct way to retain four-lug wheels. Account for the +0.41-inch mounting offset change when checking tire position and fender space. Compare the actual wheel with the supplied profile drawing, and select suitable hydraulic lines and fittings separately.

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.