Wilwood Rear Superlite Brake Conversion with Black Calipers, Drilled 12.88-Inch Rotors and EPB, Small Ford 2.50-Inch Axle Geometry

The drilled-ring configuration combines black radial-mount Superlite calipers, aluminum hats and 12.88-inch two-piece rear rotors. Its independent electric parking units are part of the package, with the axle brackets chosen for a 2.50-inch offset. Wilwood Engineering began in 1977 under founder Bill Wood and is based in Camarillo, California. It designs and manufactures disc braking equipment for motorsport, specialized applications and street-performance vehicles. Calipers, brake rotors, master cylinders, valves, fittings and brake lines form part of the range and must match the requirements of the complete system.

Technical Details

• Manufacturer part number: 140-16151-D; supplied as one rear axle brake kit.
• Rotor material and surface: Spec-37 Iron; vented; SRP Drilled & Slotted; surface finish Black Electro Coat.
• Supplied service pads: BP-10 compound; verify suitability for the intended operating conditions.
• Caliper finish and port: Black Powder Coat; hydraulic inlet 1/8-27 NPT.
• 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.
• Hydraulic installation: Hydraulic lines and fittings are separate and must be selected for the vehicle; master cylinder not included; brake booster 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: 17 in; 431.8 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.
• Rotor dimensions: 12.88 in; 327.15 mm outside diameter; 1.10 in; 27.94 mm thick.
• 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.
• Rear axle interface: Small Ford housing flange; 2.50 in; 63.5 mm axle offset. Measure the installed assembly.

Fitment & Compatibility

Installation requires the Small Ford housing flange and a measured 2.50-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 17-inch wheel diameter is only the starting point.

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 a 1990 Lincoln Town Car, identify the actual axle and confirm the specified interface; do not select this conversion from model and year alone.

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.

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.