Wilwood Chevy 12-Bolt Rear EPB Conversion with Red Superlite Calipers and Drilled 14-Inch Rotors, C-Clip Housing, 2.75-Inch Offset

This red-caliper Chevy rear package combines drilled-and-slotted 14-inch Spec-37 rings with four-piston Superlite service brakes. Separate electric parking calipers, a controller, harness and switch form the included static-hold system. Wilwood Engineering was established in 1977 by Bill Wood and is based in Camarillo, California. It designs and manufactures disc brake equipment for specialized applications, motorsport and street-performance use. The product range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines; each is chosen to meet the complete system’s requirements.

Technical Details

• Manufacturer part number — 140-16166-DR; supplied as one rear axle brake kit.
• Hydraulic installation — Hydraulic lines and fittings are separate and must be selected for the vehicle; master cylinder not included; brake booster not included.
• Rotor material and surface — Spec-37 Iron; vented; SRP Drilled & Slotted; surface finish Black Electro Coat.
• Caliper finish and port — Red Powder Coat; hydraulic inlet 1/8-27 NPT.
• Rear axle interface — 12 Bolt housing flange; 2.75 in; 69.85 mm axle offset. Measure the installed assembly.
• Rotor mounting hats — Aluminum; Black E-Coat; hat offset 2.035 inches. This is a hat dimension, not the axle offset.
• Mechanical contents — Separate wheel hubs are not included; mounting hardware supplied; spindles not included.
• Parking-brake package — Two separate electric parking calipers, control unit, switch with pigtail and universal wiring harness included; vehicle electrical connections require installation.
• Minimum nominal wheel diameter — 18 in; 457.2 mm; full spoke/barrel clearance must be checked using the installation drawing.
• Hydraulic service calipers — Forged Narrow Superlite 4R; 4 pistons per caliper; Forged Aluminium body; radial mounting; Stainless pistons.
• Cataloged rotor/hat mounting-hole pattern — 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 bolt circle; cataloged stud-hole clearances 0.520 in; 13.21 mm. The existing hub or axle flange determines the vehicle wheel pattern and stud specification. These rotor/hat drillings do not convert that pattern.
• Rotor dimensions — 14.00 in; 355.6 mm outside diameter; 1.10 in; 27.94 mm thick.
• Supplied service pads — BP-10 compound; verify suitability for the intended operating conditions.

Fitment & Compatibility

Match the actual rear axle to the 12 Bolt diagram and 2.75-inch offset before disassembly. Verify the bearing arrangement, axle register and wheel-bolt pattern independently, including any changes made during a previous axle conversion. Use the full 18-inch minimum wheel envelope for both caliper positions. Confirm C-clip axle retention and end play; a C-clip eliminator or different housing flange requires its own fit assessment.

Review the fitment table below after identifying the rear axle. Confirm housing-flange dimensions, retention hardware, offset, register and wheel pattern against the kit drawing. For Chevelle, 442, Beaumont, Camaro and Apollo vehicles, establish rear-axle fit independently of the front spindle configuration. Confirm the housing flange, axle retention and offset on the installed rear assembly.

A separate electric caliper at each rear wheel performs the parking function; it does not replace the hydraulic service circuit. Supplied EPB equipment includes the controller, switch/pigtail and wiring harness. Install the vehicle power, ground and accessory connections using DS1353. Use the system only for parking hold, not emergency stopping.

Before selecting the conversion, PMB Performance can review the listed requirements with you. We have over 20 years of parts experience; include axle measurements and any wheel, hub or suspension changes.

Review the Installation instructions, Technical bulletin, EPB mounting and wiring instructions before selecting hardware or checking wheel clearance.

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.