Wilwood Front Five-Lug GM Truck/SUV Brake Package, Red Superlite Calipers and 12.19-Inch Drilled/Slotted Rotor/Hubs for Iron ProSpindles (Listed 1963–1987 Applications)

For a five-lug wheel conversion on the listed GM truck/SUV iron ProSpindles, this kit supplies red Superlite 6R calipers and 12.19-inch SRP rotors. The included hubs and BP-10 pads belong to that spindle-specific package. Original equipment spindles are excluded. Measure wheel contact and barrel clearance, and account for the published inboard/outboard wheel-position change associated with the vehicle's production range. Founded by Bill Wood in 1977 and based in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. Its calipers, brake rotors, master cylinders, valves, fittings and brake lines are selected to suit the complete braking system.

Technical Details

• Manufacturer part number: 140-15940-DR. Quantity: one kit for the stated axle/application.
• Rotor specification: 12.19-inch outside diameter × 1.10-inch thickness; SRP drilled & slotted faces. Iron construction; SRP Drilled Rotor design; published vane configuration: 32 V.
• Service caliper: Forged Narrow Superlite 6R; 6 pistons; stainless piston material. Radial mounting, red powder coat finish.
• Supplied hub assembly: Hub - Hat Mount, aluminum, bare finish.
• Wheel mounting patterns: 5 x 4.75; 5 x 5.00 inches.
• Published piston bores: 1.75, 1.25, 1.25 inches. Supplied pad compound: BP-10.
• Caliper hydraulic inlet: 1/8-27 NPT.
• Brake hoses are not included. Manufacturer line-kit reference(s), sold separately: 220-7056, 220-11237, 220-12168.
• Minimum nominal wheel diameter: 15 inches. The wheel must also clear the actual caliper and rotor profile in the installation drawing.
• Mounting hardware and the specified pads are included. Spindles, master cylinder and brake booster are not supplied.

Fitment & Compatibility

These application rows require Wilwood C10 one-piece iron Pro Drop spindles; the kit will not fit original equipment spindles. The listed GM trucks and SUVs span specific 1963–1987 model ranges, so check the exact row and installed spindle. Relative to the original brakes and spindle, Wilwood specifies wheel movement of 0.41 inch outboard for 1963–1970 and 0.06 inch inboard for 1971–1987. Match the five-lug 5 × 4.75 / 5 × 5.00-inch wheel interface and allow for the resulting wheel position when checking fender, suspension and brake clearance. Spindles and flexible lines are not included. Use the complete application table below for the individual year, submodel, brake configuration and note attached to each entry.

PMB Performance brings 20+ years of parts and fitment experience to brake selection. Send the actual spindle or axle details, existing brake package and wheel measurements for help checking this combination.

Manufacturer documentation: Installation instructions.

Manufacturer Warning

Applicable to brake pads only: Wilwood warns of exposure to arsenic, cadmium, hexavalent chromium compounds, lead, nickel, cobalt and antimony trioxide, chemicals known to California to cause cancer or reproductive harm. More information: P65Warnings.ca.gov.