Wilwood Black Six-Piston Front Superlite System, Five-Lug Hubs and 13.06-Inch Drilled/Slotted Rotors for Later GM Truck/Van/SUV Iron ProSpindles (Listed 1988–2002 Applications)

The drilled/slotted 13.06-inch rotor option combines black six-piston Superlite calipers with BP-10 pads and five-lug hubs. This is the later-GM iron ProSpindle front package, including the specified aluminum hats and hub hardware. Original equipment spindles cannot be used. Check the distinct van, truck or SUV year entry and route separately purchased flexlines to suit the completed installation. From Camarillo, California, Wilwood Engineering develops disc-brake systems for street-performance, motorsport and specialized uses. Bill Wood founded the company in 1977. Calipers, brake rotors, master cylinders, valves, fittings and brake lines form part of its range, and must be combined to match the demands of the complete brake system.

Technical Details

• Manufacturer part number: 140-15949-D. Quantity: one kit for the stated axle/application.
• Brake hoses are not included. Manufacturer line-kit reference(s), sold separately: 220-16439.
• 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: 13.06-inch outside diameter × 1.25-inch thickness; SRP drilled & slotted faces. Spec-37 Iron construction; SRP Drilled Rotor design; published vane configuration: 48 CV.
• Rotor hats: aluminum, black e-coat finish; Big Brake Hat - Flared Bell. Hat offset: 1.230 inch.
• Supplied hub assembly: Hub - Hat Mount, aluminum, bare finish.
• Wheel mounting patterns: 5 x 4.75; 5 x 5.00 inches.
• Mounting hardware and the specified pads are included. Spindles, master cylinder and brake booster are not supplied.
• Minimum nominal wheel diameter: 17 inches. The wheel must also clear the actual caliper and rotor profile in the installation drawing.

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.

Use PMB Performance’s 20+ years of parts and fitment experience when checking a modified brake layout. The installed mounting hardware and measured wheel space are more useful than model and year alone.

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.