Wilwood red XRS6R front brake kit for Chevrolet / GMC Trucks with Wilwood Iron ProSpindles, 14.00-inch slotted rotors and components laid out
Wilwood red XRS6R front caliper with 14.00-inch slotted rotor, assembled brake view for Chevrolet / GMC Trucks with Wilwood Iron ProSpindles
Wilwood red XRS6R front brake kit for Chevrolet / GMC Trucks with Wilwood Iron ProSpindles, 14.00-inch slotted rotors and components laid out
Wilwood red XRS6R front caliper with 14.00-inch slotted rotor, assembled brake view for Chevrolet / GMC Trucks with Wilwood Iron ProSpindles

14.00-inch Wilwood GT Slotted Front Kit — 1963–1987 Chevrolet / GMC Trucks with Wilwood Iron ProSpindles, Red XRS6R

SKU: 140-18299-R

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Product details

For the listed Chevrolet/GMC applications on Wilwood iron ProSpindles, this package supplies red calipers and slotted 14-inch rotors. The BP-10 pads work within six-piston XRS6R bodies, and aluminum hubs carry the two-piece rotor assemblies and wheels. Bill Wood established Wilwood Engineering in 1977. From Camarillo, California, the company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines, for motorsport, street-performance and specialized applications.

Technical Details

Kit contents and separate parts

  • Manufacturer part number: 140-18299-R
  • Supply: one brake kit; components for both sides of the axle
  • Mounting hardware: included
  • Hubs: included
  • Spindles, master cylinder and brake booster: not included
  • Brake flexlines: not included

Fitment & Compatibility

This 14-inch front package fits the listed Chevrolet/GMC trucks when their suspension uses the specified Wilwood iron ProSpindles. It supplies the aluminum hubs and 1/2-20 studs; choose the hub's 5 x 4.50- or 5 x 4.75-inch stud pattern to match the wheels. Account for the published +0.68-inch outward wheel-mounting change on each side when checking the fenders and tires. The larger brake assembly also needs its own wheel-template check. Spindles and flexline kit 220-8307 are separate. Parking-brake cables are unrelated to this front service-brake installation. Consult the fitment table below for the individual year, model and equipment details. Nominal minimum wheel diameter: 18 in; 457.2 mm. The linked wheel-clearance diagram must confirm barrel and spoke clearance; wheel diameter alone does not guarantee fit.

Rotors and mounting dimensions

  • Rotors: 14.00 in; 355.6 mm diameter x 1.10 in; 27.94 mm thick; vented Spec-37 Iron
  • Friction faces: GT Slotted
  • Rotor coating/finish: Black Electro Coat
  • Internal vanes: 72 curved
  • Hats: Aluminum; Black E-Coat; 1.880-inch hat offset
  • Hub wheel-stud patterns: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm
  • Stud specification: 1/2-20 in

Calipers and pads

  • Calipers: XRS6R; 6 pistons
  • Caliper finish: Red Powder Coat
  • Body construction: Forged aluminum
  • Pistons: stainless
  • Mounting: radial
  • Hydraulic inlet: 1/8-27 NPT
  • Included pad compound: BP-10
  • Listed piston bore sizes: 1.62 / 1.12 / 1.12 in

Installation documents

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.

PMB Performance has supported brake and restoration projects for more than 20 years. Share your vehicle and installed chassis hardware with us for help selecting the correct brake package.

Vehicle Applications

Years Make Model Model option Front brakes Rear brakes Kit application Notes
1963-1967 Chevrolet C10 Panel Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1963-1974 Chevrolet C10 Pickup Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1963-1966 Chevrolet Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1963-1965 GMC 1000 Series Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1963-1966 GMC Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1966 GMC 1000 Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1967-1986 Chevrolet C10 Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1967-1974 GMC C15/C1500 Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1967-1974, 1979-1986 GMC C1500 Pickup Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1970-1974 Chevrolet Blazer Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1970-1982 GMC Jimmy Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1975-1986 Chevrolet C10 Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1975-1982 Chevrolet K5 Blazer Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1975-1978 GMC C15 Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1979-1986 GMC C1500 Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1987 Chevrolet R10 Pickup Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1987 Chevrolet R10 Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1987 GMC R1500 Pickup Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3
1987 GMC R1500 Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Front Kit 1, 2, 3

Application Notes

  1. This is a front service-brake kit. Any rear parking-brake cable is selected separately for the vehicle's rear brake system.
  2. Line kit included (manufacturer): None
  3. Front line-kit reference: 220-8307