Wilwood Front Red Six-Piston Brake/Hub Conversion for GM/Ford/Mercury Spindle Applications, 12.88-Inch SRP Rotors (1960–1982)

Red six-piston Superlite calipers pair with drilled/slotted 12.88-inch rotors in this Wilwood Challenge Series front kit. Replacement hubs, bearings, BP-10 pads and brackets are supplied. Its one-piece rotor package is selected by spindle geometry, with separate application conditions for the many GM, Ford and Mercury vehicles listed below. 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. Its product range serves motorsport, street-performance, and specialized applications, with individual components selected to match the requirements of the complete brake system.

Technical Details

• Manufacturer part number: 140-12271-DR
• Type: Forged Narrow Superlite 6R Big Brake Front Brake Kit (Hub and 1PC Rotor)
• Calipers: Forged Narrow Superlite 6R; 6 pistons per caliper; Red Powder Coat; radial mounting.
• Piston bores: 1.62, 1.12, 1.12 inches; Stainless pistons. Included pad compound: BP-10.
• Rotors: 12.88-inch diameter × 1.10-inch width; SRP Drilled & Slotted; Iron; Black Electro Coat finish.
• Wheel mounting change from OE: +0.38 inches per side; check wheel offset and fender clearance.
• Replacement hubs: Hub - Hat Mount; Aluminum; Bare. Bearings and hub hardware are specified in the installation instructions.
• Wheel bolt circles: 5 x 4.50; 5 x 4.75 inches.
• Included: paired calipers, pads, rotors, brackets and assembly hardware, replacement hubs and bearings.
• Hydraulic flex lines are separate. Master cylinder, booster and spindles are not included; retain or select suitable matching components.
• Conditional minimum wheel diameter: 17 inches. Verify the complete clearance drawing for barrel and spoke offset before purchase.

Fitment & Compatibility

Compare the exact year and drum, disc or Ridetech pin-spindle option to the installed hardware. Do not infer fitment from another vehicle using a similar model name or a different aftermarket upright. DS865 covers bracket assembly and early drum-spindle preparation. Verify the outward hub offset against tire/fender clearance and check the hub bolt circle. Suitable hydraulic lines are additional. The full 17-inch conditional wheel section must clear the caliper body and rotor, including behind the spokes.

Check the individual year, model, submodel and equipment conditions in the fitment table below before ordering.

Wilwood installation documents: Installation instructions.

PMB Performance has over 20 years of brake-system experience. Contact us with your vehicle, axle or spindle details and wheel measurements 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.