Wilwood Front GT Rotor/Hub Package, Red Superlite Calipers, GM/Ford/Mercury Original and Specified Drop-Spindle Cars (1960–1982)

This red Wilwood front package supplies Superlite 6R calipers and GT slotted 12.88-inch one-piece rotors with replacement hubs. The six-piston arrangement runs on included BP-10 pads. Its brackets are chosen for the documented spindle family, which includes particular factory drum/disc and aftermarket pin-spindle applications rather than general vehicle interchangeability. 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-R
• 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; GT 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

Read the individual model/year and front-brake options, paying attention to O.A.I., Z/28 and Ridetech-specific rows. DS865 explains the assembly and any spindle preparation needed on the early drum-brake configurations. Check the wheel's lug circle and the published outward mounting change before assessing fender space. The conditional minimum is 17 inches and must be verified across the complete spoke/barrel profile. Obtain compatible hoses separately and inspect retained spindle surfaces before setting caliper alignment.

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.