Wilwood Front GT Rotor/Hub Brake Package for Later GM Truck/Van/SUV Iron ProSpindles, 12.19-Inch Rotors and Red Superlite 6R Calipers (Listed 1988–2002 Applications)

Red Superlite calipers and GT slotted 12.19-inch rotors make this the five-lug front conversion for the stated later GM applications. It supplies aluminum hubs, hats and BP-10 pads while leaving flexline selection to the actual vehicle installation. The table's truck, SUV and van entries all require the specified Wilwood iron ProSpindles. Check the bracket/spindle match before assessing the nominal 15-inch wheel requirement. Based in Camarillo, California, Wilwood Engineering was founded by Bill Wood in 1977. Its disc brake systems serve motorsport, street-performance and specialized applications. The range includes calipers, rotors, master cylinders, valves, fittings and brake lines, with each component chosen for its role in the complete brake installation.

Technical Details

• Manufacturer part number: 140-15948-R. Quantity: one kit for the stated axle/application.
• Supplied hub assembly: Hub - Hat Mount, aluminum, bare finish.
• Wheel mounting patterns: 5 x 4.75; 5 x 5.00 inches.
• Service caliper: Forged Narrow Superlite 6R; 6 pistons; stainless piston material. Radial mounting, red powder coat finish.
• Published piston bores: 1.75, 1.25, 1.25 inches. Supplied pad compound: BP-10.
• Rotor specification: 12.19-inch outside diameter × 1.10-inch thickness; GT slotted faces. Iron construction; Ultralite HP 32 design; published vane configuration: 32 V.
• Rotor hats: aluminum, black e-coat finish; Big Brake Hat - Short Offset. Hat offset: 1.380 inch.
• Minimum nominal wheel diameter: 15 inches. The wheel must also clear the actual caliper and rotor profile in the installation drawing.
• Caliper hydraulic inlet: 1/8-27 NPT.
• Brake hoses are not included. Manufacturer line-kit reference(s), sold separately: 220-16439.
• Mounting hardware and the specified pads are included. Spindles, master cylinder and brake booster are not supplied.

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.

For fitment assistance, send PMB Performance the vehicle details together with the installed spindle or axle configuration and wheel measurements. We draw on 20+ years of parts and fitment experience to help assess the 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.