Wilwood Rear Black Superlite 4R Brake Conversion, GT Rotors & Parking Shoes for Chevrolet / GMC C1500 (1988–1998)

Chevrolet / GMC C1500 (1988–1998) applications using the specified mounting arrangement can use this Wilwood Superlite 4R rear brake conversion. It combines black 4-piston calipers, pads and gt slotted 12.88-inch rotors, with the exact fitment qualifications set out below. Wilwood Engineering designs and manufactures disc-brake systems and components in Camarillo, California, where the company founded by Bill Wood in 1977 is based. Its range serves specialized applications, motorsport and street-performance vehicles, including calipers, brake rotors, master cylinders, valves, fittings and brake lines chosen to match a complete system.

Technical Details

• Manufacturer part number: 140-17542; supplied as an axle kit.
• Brake rotor size: 12.88-inch outside diameter × 1.10-inch thickness; vented friction section.
• Service calipers: Forged Narrow Superlite 4R; 4 pistons per caliper; Black Powder Coat; radial mounting; stainless pistons.
• Supplied friction pads: BP-10 compound; match operating conditions to the intended use.
• Hardware and retained components: Mounting hardware supplied; existing wheel hubs retained; spindles, master cylinder and brake booster are not included.
• Parking brake: Internal shoe parking brake supplied; modify the original cable with included cable-end adapter kit 330-17540.
• Rotor specification: Material: Spec-37 Iron; Type: GT 48 Curved Vane; Style: GT Slotted; Surface Finish: Black Electro Coat.
• Wheel envelope: 17-inch minimum nominal wheel diameter; verify the entire wheel-clearance drawing, including spoke and barrel shape.
• Rotor hats: Aluminum parking brake hat - standard; Black E-Coat; hat offset 1.950 inches. Hat offset is distinct from axle offset.
• Rotor/hat mounting-hole pattern: 5 x 5 in; 5 x 127 mm; cataloged hole clearances 0.580 in; 14.73 mm. These are rotor or hat drillings, not replacement wheel studs. The retained hub or axle determines the vehicle wheel pattern.
• Hydraulic sizing: cataloged bore sizes 1.12, 1.12 inches; piston area 1.98 square inches; inlet 1/8-27 NPT.
• Hydraulic lines: Hydraulic flexlines and fittings are not included; select compatible lines for the complete installation.
• Housing-flange requirement: 88-98 C1500 flange; 3.25-inch axle offset, measured using the manufacturer worksheet.

Fitment & Compatibility

DS1564 specifies the five-lug C1500 rear axle and 3.25-inch axle offset. Confirm the Chevrolet or GMC C1500 row below, the flange register and at least the documented 17-inch wheel envelope. The internal parking brake requires modifying the OE cable with the included cable-end kit; routing and adjustment are part of installation. A six-lug or four-wheel-drive axle is not established by a general C1500 year range. Use the fitment table below to check the complete application and option notes.

For help matching the brake hardware, contact PMB Performance with your VIN, photographs and measurements. Our team has over 20 years of experience with parts and fitment details.

Review Installation instructions, Technical bulletin for the complete installation and clearance requirements.

Manufacturer Warning

Applicable to brake pads only. 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.