Wilwood Front Drilled-Rotor and Replacement-Hub Assembly with Red Calipers, Fairlane/Falcon/Maverick/Mustang/Ranchero/Torino/Cougar/Cyclone/Montego/Comet (1970–1974)

Red Dynapro six-piston calipers distinguish this drilled/slotted front hub conversion for the listed Ford and Mercury vehicles. Its 12.19-inch friction rings attach to replacement hubs and work with BP-10 pads. Matching the correct factory disc or drum spindle remains essential; the different production and brake-equipment notes define which original mounting arrangement the kit is designed to use. 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: 140-12945-DR
• Type: Forged Dynapro 6 Big Brake Front Brake Kit (Hub).
• Calipers: Dynapro 6; 6-piston; Red Powder Coat.
• Piston bore dimensions: 1.62, 1.38, 1.38 inches; stainless pistons. Caliper mounting: lug.
• 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.
• Wheel-mounting change from OE: +0.09 inch per side.
• Replacement hubs: Hub - Vented Rotor Offset; Aluminum; Bare.
• Wheel bolt circles: 5 x 4.50; 5 x 4.75 inches.
• Included: paired calipers, pads, rotors and mounting hardware, caliper mounting brackets, replacement hubs and bearing hardware.
• Hydraulic flex lines are separate; select the correct fittings, length and route for the vehicle.
• Conditional wheel minimum: 15 inches. Compare the complete wheel-clearance diagram with both barrel and spoke dimensions.
• Disc-spindle preparation may require drilling and re-tapping the bracket-mounting holes. Follow the exact three-hole versus four-hole bracket arrangement and machining procedure for the specified spindle in the installation document.
• Conditional wheel support: if the wheel contact face overhangs the new hub, the separately sold 6.60-inch-diameter × 0.20-inch-thick steel support spacer specified in the linked installation instructions is required. Check full seating before assembly. For stamped steel wheels without overhang, Wilwood recommends a separate 6.15-inch-diameter × 0.09-inch-thick hub shield.

Fitment & Compatibility

Check the individual row before comparing the spindle and bearing dimensions with the instructions. Observe the drum-spindle production split and Mustang factory brake exclusions. Assemble the hubs and center the calipers as directed, allowing for the 0.09-inch outward wheel-position change on each side. Test the actual wheel profile against the clearance drawing. Separate hydraulic lines must suit the vehicle and steering movement, with front/rear balance verified after installation.

Match the individual year, model, submodel and equipment conditions in the fitment table below.

Wilwood installation documents: Installation instructions.

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.