Wilwood black XRS4R rear brake kit for Chevrolet / GMC Large C10 Axle, 2.42-inch Offset, 12.88-inch slotted rotors and components laid out
Wilwood black XRS4R rear caliper with 12.88-inch slotted rotor, assembled brake view for Chevrolet / GMC Large C10 Axle, 2.42-inch Offset
Wilwood black XRS4R rear brake kit for Chevrolet / GMC Large C10 Axle, 2.42-inch Offset, 12.88-inch slotted rotors and components laid out
Wilwood black XRS4R rear caliper with 12.88-inch slotted rotor, assembled brake view for Chevrolet / GMC Large C10 Axle, 2.42-inch Offset

Wilwood Chevrolet / GMC Large C10 Axle, 2.42-inch Offset Brake Kit — Black XRS4R, GT Slotted 12.88-inch Rear Disc and Parking Rotors

SKU: 140-18297

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Product details

Black XRS4R calipers and 12.88-inch GT discs equip the five-lug Large Chevy C10 rear axle in this conversion. The internal-shoe parking brake is packaged inside the aluminum hats, while BP-10 pads serve the four-piston hydraulic calipers. Wilwood Engineering designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines. Bill Wood founded the company in 1977; it is based in Camarillo, California, and serves motorsport, street-performance and specialized applications.

Fitment & Compatibility

For five-lug Chevrolet/GMC applications using the Large Chevy C10 rear flange and 2.42-inch axle offset. The complete table separates pickup, Suburban, Blazer, Jimmy and van applications by year and equipment; it does not override the five-lug and flange requirements. Verify the axle register, flange diameter and stud pattern using the drawing. Internal parking shoes are included; cables, clevis hardware and flexlines are separate. Universal cable routing may require modification. Select 14-, 16- or 18-inch flexlines to suit the actual installation. Nominal minimum wheel diameter: 17 in; 431.8 mm. The linked wheel-clearance diagram must confirm barrel and spoke clearance; wheel diameter alone does not guarantee fit.

Technical Details

Calipers and pads

  • Calipers: XRS4R; 4 pistons
  • Caliper finish: Black 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: 1.12 / 1.12 in

Rotors and mounting dimensions

  • Rotors: 12.88 in; 327.15 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: 48 curved
  • Hats: Aluminum; Black E-Coat; 1.540-inch hat offset
  • Rotor/hat wheel-stud clearance patterns: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm; 5 x 5 in; 5 x 127 mm
  • Stud specification: 1/2-inch wheel studs (hat clearance; verify existing axle studs)

Kit contents and separate parts

  • Manufacturer part number: 140-18297
  • Supply: one brake kit; components for both sides of the axle
  • Mounting hardware: included
  • Hubs: not included
  • Spindles, master cylinder and brake booster: not included
  • Brake flexlines: not included
  • Axle housing flange: Large Chevy C10
  • Required axle/hub offset: 2.42 in; 61.47 mm

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.

With over 20 years of experience in brake systems and restoration, PMB Performance can help check the mounting arrangement, wheel clearance and remaining installation parts for your build.

Vehicle Applications

Years Make Model Submodel Model option Front brakes Rear brakes Kit application Notes
1963-1967 Chevrolet C10 Panel 4 x 2 Drum Drum Rear Kit 1, 2
1963-1967 Chevrolet C10 Panel Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1963-1967 Chevrolet C10 Panel Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1963-1967 Chevrolet C10 Panel Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1963-1967 Chevrolet C10 Panel Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1963-1970 Chevrolet C10 Pickup 4 x 2 Drum Drum Rear Kit 1, 2
1963-1974 Chevrolet C10 Pickup Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1963-1974 Chevrolet C10 Pickup Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1963-1974 Chevrolet C10 Pickup Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1963-1974 Chevrolet C10 Pickup Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1963-1966 Chevrolet Suburban 4 x 2 Drum Drum Rear Kit 1, 2
1963-1966 Chevrolet Suburban 4 x 4 Drum Drum Rear Kit 1, 2
1963-1966 Chevrolet Suburban Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1963-1966 Chevrolet Suburban Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1963-1966 Chevrolet Suburban Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1963-1966 Chevrolet Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1963-1964 GMC 1000 Series 4 x 2 Drum Drum Rear Kit 1, 3, 2
1963-1965 GMC 1000 Series Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1963-1965 GMC 1000 Series Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1963-1965 GMC 1000 Series Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1963-1965 GMC 1000 Series Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1963-1964 GMC Suburban 4 x 2 Drum Drum Rear Kit 1, 3, 2
1963-1966 GMC Suburban Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1963-1966 GMC Suburban Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1963-1966 GMC Suburban Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1963-1966 GMC Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1965, 1967, 1969 Chevrolet C10 Pickup w/ Ridetech Drop Spindle Drop Drum Rear Kit 1, 4, 3, 2
1965 GMC 1000 Series 4 x 2 Drum Drum Rear Kit 1, 2
1965 GMC 1000 Series 4 x 4 Drum Drum Rear Kit 1, 2
1965-1966 GMC Suburban 4 x 2 Drum Drum Rear Kit 1, 2
1965 GMC Suburban 4 x 4 Drum Drum Rear Kit 1, 2
1966 GMC 1000 4 x 2 Drum Drum Rear Kit 1, 2
1966 GMC 1000 4 x 4 Drum Drum Rear Kit 1, 2
1966 GMC 1000 Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1966 GMC 1000 Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1966 GMC 1000 Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1966 GMC 1000 Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1967-1970 Chevrolet C10 Suburban 4 x 2 Drum Drum Rear Kit 1, 2
1967-1986 Chevrolet C10 Suburban Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1967-1986 Chevrolet C10 Suburban Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1967-1986 Chevrolet C10 Suburban Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1967-1986 Chevrolet C10 Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1967-1970 GMC C15/C1500 Suburban 4 x 2 Drum Drum Rear Kit 1, 2
1967-1974 GMC C15/C1500 Suburban Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1967-1974 GMC C15/C1500 Suburban Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1967-1974 GMC C15/C1500 Suburban Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1967-1974 GMC C15/C1500 Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1967-1970 GMC C1500 Pickup 4 x 2 Drum Drum Rear Kit 1, 2
1967-1974, 1979-1986 GMC C1500 Pickup Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1967-1974, 1979-1986 GMC C1500 Pickup Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1967-1974, 1979-1986 GMC C1500 Pickup Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1967-1974, 1979-1986 GMC C1500 Pickup Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1969-1970 Chevrolet Blazer 4 x 4 Drum Drum Rear Kit 1, 2
1970 Chevrolet Blazer 4 x 2 Drum Drum Rear Kit 1, 2
1970-1974 Chevrolet Blazer Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1970-1974 Chevrolet Blazer Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1970-1974 Chevrolet Blazer Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1970-1974 Chevrolet Blazer Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1970 GMC Jimmy 4 x 2 Drum Drum Rear Kit 1, 2
1970 GMC Jimmy 4 x 4 Drum Drum Rear Kit 1, 2
1970-1982 GMC Jimmy Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1970-1982 GMC Jimmy Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1970-1982 GMC Jimmy Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1970-1982 GMC Jimmy Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1971-1972 Chevrolet Blazer 4 x 2 w/ OE Disc Brake Spindle Disc Drum Rear Kit 1, 2
1971-1974 Chevrolet C10 Pickup Disc Brake Spindle (OE) Disc Drum Rear Kit 1, 2
1971-1980 Chevrolet C10 Suburban Disc Brake Spindle (OE) Disc Drum Rear Kit 1, 2
1971-1974, 1979-1980 GMC C1500 Pickup Disc Brake Spindle (OE) Disc Drum Rear Kit 1, 2
1971-1982 GMC Jimmy 4 x 2 Disc Brake Spindle (OE) Disc Drum Rear Kit 1, 2
1971-1972 GMC P15 Series 4 x 2 w/ OE Disc Brake Spindle Disc Drum Rear Kit 1, 2
1973-1974 Chevrolet Blazer 4 x 2, OE Disc Brake Spindle Disc Drum Rear Kit 1, 2
1973-1974 Chevrolet Blazer Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1973-1974 Chevrolet C10 Pickup Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1973-1986 Chevrolet C10 Suburban Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1973-1974 Chevrolet G10 Van All Disc Drum Rear Kit 1, 2
1973-1974 Chevrolet G20 Van All Disc Drum Rear Kit 1, 2
1973-1974 GMC C15/C1500 Suburban Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1973-1974, 1979-1986 GMC C1500 Pickup Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1973-1982 GMC Jimmy Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1973-1980 GMC P15 Series All Disc Drum Rear Kit 1, 2
1975-1980 Chevrolet C10 Disc Brake Spindle (OE) Disc Drum Rear Kit 1, 2
1975-1986 Chevrolet C10 Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1975-1986 Chevrolet C10 Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1975-1986 Chevrolet C10 Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1975-1986 Chevrolet C10 Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1975-1986 Chevrolet C10 w/ Ridetech Drop Spindle Drop Drum Rear Kit 1, 4, 3, 2
1975-1987 Chevrolet G10 Beauville Beauville Disc Drum Rear Kit 1, 2
1975-1987 Chevrolet G10 Chevy Van Chevy Van Disc Drum Rear Kit 1, 2
1975-1987 Chevrolet G10 Sportvan Sportvan Disc Drum Rear Kit 1, 2
1975-1980 Chevrolet K5 Blazer 4 x 2, OE Disc Brake Spindle Disc Drum Rear Kit 1, 2
1975-1982 Chevrolet K5 Blazer Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1975-1982 Chevrolet K5 Blazer Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1975-1982 Chevrolet K5 Blazer Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1975-1982 Chevrolet K5 Blazer Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1975-1982 Chevrolet K5 Blazer Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1975-1978 GMC C15 Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1975-1978 GMC C15 Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1975-1978 GMC C15 Suburban Disc Brake Spindle (OE) Disc Drum Rear Kit 1, 2
1975-1978 GMC C15 Suburban Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1975-1978 GMC C15 Suburban Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1975-1978 GMC C15 Suburban Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1975-1978 GMC C15 Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1979-1980 GMC C1500 Suburban Disc Brake Spindle (OE) Disc Drum Rear Kit 1, 2
1979-1986 GMC C1500 Suburban Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1979-1986 GMC C1500 Suburban Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1979-1986 GMC C1500 Suburban Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1979-1986 GMC C1500 Suburban Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1979-1986 GMC C1500 Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1981-1986 Chevrolet C10 With 1.00" Wide Front Rotor Disc Drum Rear Kit 1, 2
1981-1986 Chevrolet C10 With 1.25" Wide Front Rotor Disc Drum Rear Kit 1, 2
1981-1986 Chevrolet C10 Suburban With 1.00" Wide Front Rotor Disc Drum Rear Kit 1, 2
1981-1986 Chevrolet C10 Suburban With 1.25" Wide Front Rotor Disc Drum Rear Kit 1, 2
1981-1982 Chevrolet K5 Blazer 4 x 2 Disc Drum Rear Kit 1, 2
1981-1986 GMC C1500 Pickup 4 x 2 w/ 1.00" Wide Front Rotor Disc Drum Rear Kit 1, 2
1981-1986 GMC C1500 Pickup 4 x 2 w/ 1.25 Wide Front Rotor Disc Drum Rear Kit 1, 2
1981-1986 GMC C1500 Suburban 4 x 2 w/ 1.00" Wide Front Rotor Disc Drum Rear Kit 1, 2
1981-1986 GMC C1500 Suburban 4 x 2 w/ 1.25 Wide Front Rotor Disc Drum Rear Kit 1, 2
1983 Chevrolet G10 Base Base Disc Drum Rear Kit 1, 2
1983-1984, 1986-1987 Chevrolet G10 Bonaventure Bonaventure Disc Drum Rear Kit 1, 2
1985-1987 Chevrolet G20 Beauville Beauville Disc Drum Rear Kit 1, 2
1985-1987 Chevrolet G20 Chevy Van Chevy Van Disc Drum Rear Kit 1, 2
1985-1987 Chevrolet G20 Sportvan Sportvan Disc Drum Rear Kit 1, 2
1987 Chevrolet R10 Pickup 4 x 2 w/ 1.00" Wide Front Rotor Disc Drum Rear Kit 1, 2
1987 Chevrolet R10 Pickup 4 x 2 w/ 1.25 Wide Front Rotor Disc Drum Rear Kit 1, 2
1987 Chevrolet R10 Pickup Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1987 Chevrolet R10 Pickup Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1987 Chevrolet R10 Pickup Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1987 Chevrolet R10 Pickup Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1987 Chevrolet R10 Pickup w/ Ridetech Drop Spindle Drop Drum Rear Kit 1, 4, 3, 2
1987 Chevrolet R10 Suburban 4 x 2 w/ 1.00" Wide Front Rotor Disc Drum Rear Kit 1, 2
1987 Chevrolet R10 Suburban 4 x 2 w/ 1.25 Wide Front Rotor Disc Drum Rear Kit 1, 2
1987 Chevrolet R10 Suburban Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1987 Chevrolet R10 Suburban Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1987 Chevrolet R10 Suburban Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1987 Chevrolet R10 Suburban Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1987 Chevrolet R10 Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1987 GMC R1500 Pickup 4 x 2 w/ 1.00" Wide Front Rotor Disc Drum Rear Kit 1, 2
1987 GMC R1500 Pickup 4 x 2 w/ 1.25 Wide Front Rotor Disc Drum Rear Kit 1, 2
1987 GMC R1500 Pickup Vehicles using CPP 2" Drop Spindle Drop Drum Rear Kit 1, 3, 2
1987 GMC R1500 Pickup Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1987 GMC R1500 Pickup Vehicles using Ridetech Drop Spindle Drop Drum Rear Kit 1, 3, 2
1987 GMC R1500 Pickup Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1987 GMC R1500 Pickup Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2
1987 GMC R1500 Suburban 4 x 2 w/ 1.00" Wide Front Rotor Disc Drum Rear Kit 1, 2
1987 GMC R1500 Suburban 4 x 2 w/ 1.25 Wide Front Rotor Disc Drum Rear Kit 1, 2
1987 GMC R1500 Suburban Vehicles using DSE Drop Spindle. Drop Drum Rear Kit 1, 3, 2
1987 GMC R1500 Suburban Vehicles using Wilwood Aluminum Modular ProSpindles, 5 Lug only Drop Drum Rear Kit 1, 3, 2
1987 GMC R1500 Suburban Vehicles using Wilwood Iron ProSpindles Drop Drum Rear Kit 1, 3, 2

Application Notes

  1. C-10 / C-15 Truck - 5 lug only.
  2. Line kit included (manufacturer): None
  3. Universal Parking Brake cable kit, may require modifications to cable or vehicle to install.
  4. Universal Flexline kits available: 220-7056 (14"), 220-7699 (16") or 220-8307 (18"). Choose correct length for your application.