Wilwood Rear Drilled 14-Inch Rotor and Electric Parking Kit with Black Superlite Calipers, Chevy 12-Bolt C-Clip Axles, 2.75-Inch Offset

Drilled 14-inch rings on aluminum hats define this black Superlite rear conversion. The hydraulic service calipers are separate from the motor-driven parking units, both of which must clear the intended wheel and axle surroundings. Founded in 1977 by Bill Wood, Wilwood Engineering is based in Camarillo, California. Its disc brake systems and components serve motorsport, street-performance and specialized applications. The range includes calipers, rotors, master cylinders, valves, fittings and brake lines, chosen to suit the mounting and hydraulic requirements of the complete system.

Technical Details

• Manufacturer part number: 140-16166-D; supplied as one rear axle brake kit.
• Rotor mounting hats: Aluminum; Black E-Coat; hat offset 2.035 inches. This is a hat dimension, not the axle offset.
• Hydraulic service calipers: Forged Narrow Superlite 4R; 4 pistons per caliper; Forged Aluminium body; radial mounting; Stainless pistons.
• Rotor dimensions: 14.00 in; 355.6 mm outside diameter; 1.10 in; 27.94 mm thick.
• 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: Black 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.
• Supplied service pads: BP-10 compound; verify suitability for the intended operating conditions.
• Minimum nominal wheel diameter: 18 in; 457.2 mm; full spoke/barrel clearance must be checked using the installation drawing.
• Mechanical contents: Separate wheel hubs are not included; mounting hardware supplied; spindles not included.
• 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 material and surface: Spec-37 Iron; vented; SRP Drilled & Slotted; surface finish Black Electro Coat.

Fitment & Compatibility

Installation requires the 12 Bolt housing flange and a measured 2.75-inch axle offset. Compare the housing bolt pattern, bearing/axle retention, wheel pattern and center registration with the kit drawing, then check both service-caliper and EPB-motor clearance. Nominal 18-inch wheel diameter is only the starting point. Confirm C-clip axle retention and end play; a C-clip eliminator or different housing flange requires its own fit assessment.

Any vehicle application in the fitment table below depends on the installed axle interface. Compare flange and bearing geometry, axle offset, center register and wheel hardware with the specified assembly. 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.

Service braking remains hydraulic; the additional electric calipers are for static parking hold and must not be used as an emergency stop brake. The switch/pigtail, controller and universal EPB harness are supplied. Plan the vehicle’s 12V power, ground and ignition/accessory wiring and protect all motor leads according to DS1353.

PMB Performance has more than 20 years of parts experience and can help assess the documented brake configuration. Provide the vehicle details together with clear mounting-area photographs and measurements.

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.