Wilwood Red Superlite Rear Disc and EPB Package for Chevy 12-Bolt C-Clip Axles, Drilled 12.88-Inch Rings and 2.75-Inch Offset

Red hydraulic Superlite calipers and red electric parking units surround drilled 12.88-inch rear rotor assemblies in this conversion. The supplied hats locate the rings on the specified Chevy 12-bolt C-clip axle at a 2.75-inch offset. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components for motorsport, street-performance and specialized applications, including calipers, brake rotors, master cylinders, valves, fittings and brake lines. Each component must be selected around the complete braking system.

Technical Details

• Manufacturer part number — 140-16165-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.
• 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.
• Parking-brake package — Two separate electric parking calipers, control unit, switch with pigtail and universal wiring harness included; vehicle electrical connections require installation.
• Mechanical contents — Separate wheel hubs are not included; mounting hardware supplied; spindles not included.
• Rotor dimensions — 12.88 in; 327.15 mm outside diameter; 1.10 in; 27.94 mm thick.
• Rotor material and surface — Spec-37 Iron; vented; SRP Drilled & Slotted; surface finish Black Electro Coat.
• Hydraulic service calipers — Forged Narrow Superlite 4R; 4 pistons per caliper; Forged Aluminium body; radial mounting; Stainless pistons.
• Minimum nominal wheel diameter — 17 in; 431.8 mm; full spoke/barrel clearance must be checked using the installation drawing.
• 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 mounting hats — Aluminum; Black E-Coat; hat offset 2.035 inches. This is a hat dimension, not the axle offset.
• 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 17-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.

Two dedicated motorized calipers provide parking hold separately from the hydraulic service calipers. The kit supplies their switch with pigtail, control unit and universal wiring harness. DS1353 covers the required 12V vehicle connections and component placement. The EPB is not an emergency stopping brake.

Contact PMB Performance if the installed hardware differs from the documented arrangement. More than 20 years of parts experience informs our fitment review; photographs and measured dimensions are particularly useful.

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.