Wilwood Red AERO4 Rear Brake Kit with Drilled Rotors and Internal Parking Brake, Chevrolet and GMC C1500 Pickup (1988–1998)

Chevrolet and GMC C1500 Pickup rear brakes receive red AERO4 calipers and 14-inch SRP rotors. Plan the documented factory parking-cable changes. The conversion combines the caliper, pad and rotor configuration specified for this axle and mounting arrangement. Wilwood Engineering designs and manufactures disc brake systems from its base in Camarillo, California. Bill Wood founded the company in 1977. Its range of calipers, brake rotors, master cylinders, valves, fittings and brake lines serves motorsport, street-performance and specialized applications; each part must suit the requirements of the complete braking system.

Technical Details

• Rotor / hat axle-flange drilling: 5 x 5.00 inches; this does not change the retained hub or axle wheel pattern
• Hydraulic flexlines: Not included; supply suitable hoses and fittings separately
• Mounting hardware: Included; verify the installed fastener engagement
• Not included: spindles, wheel hubs, master cylinder or brake booster
• Parking system: Internal shoe parking brake; cable connection must be configured for the vehicle
• Manufacturer part number: 140-17673-DR
• Brake assembly: rear conversion kit; Sold as a kit.
• Calipers: AERO4; 4 pistons per caliper; Red Powder Coat
• Caliper mounting: Radial
• Included pad compound: BP-10
• Piston material: Stainless
• Hydraulic caliper inlet: 1/8-27 NPT
• Rotor dimensions and construction: 14.00 × 1.10 inches; Spec-37 Iron; SRP Drilled & Slotted
• Wheel-size reference: 18 in; the complete wheel-clearance drawing determines fit
• Axle mounting interface: 88-98 C1500; measured axle offset 3.25 in

Fitment & Compatibility

Applies to the listed 1988–1998 Chevrolet and GMC C1500 Pickup five-lug, two-wheel-drive axle configurations with a measured 3.25-inch offset. The table below distinguishes the early front-brake/chassis options and later five-lug versions; an Iron ProSpindle entry does not replace the rear-axle checks. Compare axle-flange registration, housing ends and wheel clearance before ordering. The factory parking cable must be modified using the included cable-end adapter kit. Hydraulic flexlines are separate, and the original rubber hoses do not adapt directly to these calipers.

Wilwood product specifications · Wilwood installation and compatibility information · Axle measurement worksheet · Wilwood installation and compatibility information

With over 20 years of experience in parts and fitment, PMB Performance can help compare this package with your installation. Provide the actual housing flange, axle offset, rotor registration and parking or hydraulic arrangement for that review.

Manufacturer warning — brake pads only: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.