Wilwood Front Black Superlite/SRP Conversion with Hubs, 12.88-Inch Rotors for GM/Ford/Mercury Drum, Disc and Listed Drop Spindles (1960–1982)

Black Superlite 6R calipers and drilled/slotted one-piece rotors are selected in this Wilwood front hub conversion. Each rotor is 12.88 inches in diameter and works with supplied BP-10 pads. The kit includes replacement hubs and bearings for the exact original or aftermarket spindle configurations in its application table. 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-D
• 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; 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

Check the installed spindle and brake option rather than applying the broad 1960–1982 range to every listed vehicle. Ridetech pin-spindle entries are distinct from ordinary factory drum/disc rows, and O.A.I. or Z/28 restrictions remain relevant. Review DS865 for bracket attachment and any machining needed on early spindles. Account for the outward wheel-position change and match the lug pattern. Separate compatible flex hoses are necessary, and a 17-inch wheel still needs the full caliper-profile check.

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.