Wilwood Front Black 12.19-Inch SRP Dynapro Kit for Mustang II/Pinto/Bobcat (1974–1980), Disc Spindles

This Wilwood front package pairs black Dynapro 6 calipers with drilled/slotted 12.19-inch rotors and replacement hubs. The six-piston calipers use radial brackets matched to the specified Ford/Mercury original disc spindle. The hub conversion supports the listed five-lug wheel patterns rather than retaining four-lug hardware. 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: 140-10742-D
• Type: Forged Dynapro 6 Big Brake Front Brake Kit (Hub)
• Calipers: Dynapro 6; 6 pistons; Black Powder Coat.
• Bores: 1.62, 1.38, 1.38 inches. Pads: BP-10.
• Rotors: 12.19-inch diameter × 0.81-inch width; SRP Drilled & Slotted, Iron, Black Electro Coat. 32 vanes.
• Wheel mounting change from OE: .00 inches per side.
• Hubs: Hub - Vented 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.

Fitment & Compatibility

The supplied hubs support the five-lug patterns identified in DS644, so this is not a conversion that leaves four-lug wheels unchanged. Use the original disc spindle on the applicable Mustang II, Pinto or Bobcat; the earlier drum-spindle arrangement is different. Verify the bearing seats and wheel register before attaching the friction rings. The stated OE mounting offset remains unchanged, but the six-piston caliper still occupies a new envelope inside the wheel. Check that outline and select hose length and end fittings for the car.

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.