Wilwood Front SRP Superlite Hub System for Later GM Truck/Van/SUV Iron ProSpindles, Black Six-Piston Calipers and 12.19-Inch Rotors (Listed 1988–2002 Applications)

Black six-piston Superlite calipers and drilled/slotted 12.19-inch rotors are supplied for the listed later GM iron ProSpindle arrangement. Separate hats, five-lug aluminum hubs and BP-10 pads complete the specified service-brake package. The source model coverage extends beyond pickups to certain vans and SUVs, with different year limits. Confirm the exact vehicle row and the installed spindle generation before selecting flexible lines and wheels. Wilwood Engineering was established in 1977 by Bill Wood in Camarillo, California. The company designs and manufactures disc-brake systems and components, from calipers and rotors to master cylinders, valves, fittings and brake lines, for motorsport, street-performance and specialized installations. Each component must match the rest of the brake system.

Technical Details

• Manufacturer part number: 140-15948-D. Quantity: one kit for the stated axle/application.
• Mounting hardware and the specified pads are included. Spindles, master cylinder and brake booster are not supplied.
• Service caliper: Forged Narrow Superlite 6R; 6 pistons; stainless piston material. Radial mounting, black powder coat finish.
• Published piston bores: 1.75, 1.25, 1.25 inches. Supplied pad compound: BP-10.
• Caliper hydraulic inlet: 1/8-27 NPT.
• 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.
• Rotor hats: aluminum, black e-coat finish; Big Brake Hat - Short Offset. Hat offset: 1.380 inch.
• Supplied hub assembly: Hub - Hat Mount, aluminum, bare finish.
• Wheel mounting patterns: 5 x 4.75; 5 x 5.00 inches.
• Minimum nominal wheel diameter: 15 inches. The wheel must also clear the actual caliper and rotor profile in the installation drawing.
• Brake hoses are not included. Manufacturer line-kit reference(s), sold separately: 220-16439.

Fitment & Compatibility

The listed later GM truck, van and SUV applications require the matching Wilwood C10 one-piece iron Pro Drop spindles. Original equipment spindles will not fit. The table has distinct 1988–1998 pickup entries and later SUV/van ranges, with certain van applications extending to 2002; do not apply one overall span to every model. Confirm the correct spindle generation, five-lug wheel interface, full hub seating and clearance around the caliper. Flexible brake lines are ordered separately for the vehicle being built. Use the complete application table below for the individual year, submodel, brake configuration and note attached to each entry.

PMB Performance has over 20 years of experience working with parts and fitment details. Provide the actual brake hardware, mounting dimensions and wheel measurements when requesting help with this conversion.

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.