Wilwood Front Superlite 6R Brake and Hub Kit, GM/Ford/Mercury Spindle Applications (1960–1982), Black Calipers and 12.88-Inch GT Rotors

This Wilwood Challenge Series front package combines black six-piston Superlite calipers, 12.88-inch GT slotted rotors and replacement hubs. The one-piece rotor construction distinguishes it from a separate hat-and-ring package. Supplied BP-10 pads and mounting brackets serve the individual GM, Ford and Mercury spindle applications identified 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
• Type: Forged Narrow Superlite 6R Big Brake Front Brake Kit (Hub and 1PC Rotor)
• Calipers: Forged Narrow Superlite 6R; 6 pistons per caliper; Black 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

Identify the actual spindle before using any model/year entry. The table distinguishes original drum, original disc and Ridetech pin-spindle configurations, including application-specific O.A.I. and Z/28 restrictions. DS865 also describes modification requirements on certain early drum spindles. The published wheel mounting change is outward on each side, so verify fender clearance and wheel offset. Choose hydraulic flex lines separately and compare the full conditional 17-inch wheel profile, not just its nominal diameter.

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.