Wilwood Rear Black Superlite EPB Conversion — 14-Inch GT Rotors for C1500 (1988–1998)

With black FNSL4R calipers over 14-inch GT-slotted rotors, this Wilwood kit is the larger-diameter Superlite EPB option for compatible C1500 rear axles. BP-10 service pads are supplied, along with the separate electric parking calipers and their control hardware. Bill Wood founded Wilwood Engineering in 1977; the company is based in Camarillo, California. Wilwood designs and manufactures calipers, brake rotors, master cylinders, valves, fittings and brake lines as part of its disc brake systems and component range for motorsport, street-performance and specialized applications. Each component must suit the requirements of the complete brake installation.

Technical Details

• Manufacturer part number: 140-18045
• Service calipers: Forged Narrow Superlite 4R; 4 pistons; radial mount; Black Powder Coat
• Brake rotors: 14.00 x 1.10 inches; Spec-37 Iron; GT Slotted; vented construction
• Pads: BP-10; piston material: Stainless
• Caliper body material: Forged aluminum
• Hydraulic inlet: 1/8-27 NPT
• Rotor/hat wheel-stud clearance pattern(s): 5 x 5 in; 5 x 127 mm; match the installed hub/axle pattern
• Housing/flange application: 88-98 C1500
• Required axle offset: 3.25 in; 82.55 mm
• Parking equipment: separate electric calipers, controller and harness included
• Hydraulic brake hoses: not included; select the correct application-specific lines/fittings
• Wheel clearance: 18-inch wheels may fit; verify the manufacturer’s complete caliper/rotor template for the installed wheel
• Supplied as one kit with mounting hardware; spindles, hubs, master cylinder and booster are not included

Fitment & Compatibility

The 1988–1998 Chevrolet/GMC C1500 applications below have configuration-specific limits, including five-lug 4x2 trucks and vehicles using Wilwood Iron ProSpindles. Verify the rear flange, 3.25-inch axle offset and 5 x 5-inch pattern; a year/model match alone is insufficient.

The 14-inch brake package requires a wheel-template check even where an 18-inch wheel is used. Axle preparation must meet the 6.61-inch maximum flange diameter, 0.050-inch x 45-degree chamfer and 3.09-inch register shown in the instructions.

Use the fitment table below to confirm the exact year, model, trim and installation notes.

The electric parking brake is for stationary parking, not an emergency-stop brake. Applying it while the vehicle is moving can lock the rear wheels and cause a skid. Follow the wiring and holding-test procedures in the manufacturer’s instructions.

Manufacturer Resources

• Exact Wilwood kit specifications and wheel-clearance information
• Installation instructions and component list
• Axle-offset measurement worksheet

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.

For fitment help, contact PMB Performance with your VIN and details of any axle, spindle or brake changes. Our team has over 20 years of experience checking parts and fitment, including the dimensions that a model-year search cannot establish.

Vehicle Applications

Application Notes

1. Line kit included (manufacturer): None