Wilwood Black Superlite Rear Service/EPB Conversion, 12.88-Inch Drilled/Slotted Rotors, New-Style Big Ford Housing Flange

SRP drilled/slotted 12.88-inch rotor rings and separate aluminum hats form the rotating assemblies in this Superlite rear kit. Black radial service calipers are supplied alongside the EPB calipers, controller, harness and switch. The housing-end match is Big Ford new style with 2.50-inch offset, not an unrestricted Ford vehicle application. Wheel and suspension checks must include both caliper types. From Camarillo, California, Wilwood Engineering develops disc-brake systems for street-performance, motorsport and specialized uses. Bill Wood founded the company in 1977. Calipers, brake rotors, master cylinders, valves, fittings and brake lines form part of its range, and must be combined to match the demands of the complete brake system.

Technical Details

• Manufacturer part number: 140-15844-D. Quantity: one kit for the stated axle/application.
• Service caliper: Forged Narrow Superlite 4R; 4 pistons; stainless piston material. Radial mounting, black powder coat finish.
• Published piston bores: 1.12, 1.12 inches. Supplied pad compound: BP-10.
• Caliper hydraulic inlet: 1/8-27 NPT.
• Separate electronic parking calipers, controller, wiring harness and switch are included. EPB actuation is electrical; hydraulic service braking remains independent.
• Rotor specification: 12.88-inch outside diameter × 1.10-inch thickness; SRP drilled & slotted faces. Spec-37 Iron construction; SRP Drilled Rotor design; published vane configuration: 48 CV.
• Rotor hats: aluminum, black e-coat finish; Big Brake Hat - Flared Bell. Hat offset: 2.035 inch.
• No replacement wheel hubs are supplied; retain or provide the documented matching hub arrangement.
• Wheel mounting patterns: 5 x 4.50; 5 x 4.75; 5 x 5.00 inches.
• Rear housing interface: Big Ford New Style; axle offset: 2.50 in; 63.5 mm.
• Brake hoses are not included. Select suitable braided lines and fittings for the installation.
• Minimum nominal wheel diameter: 17 inches. The wheel must also clear the actual caliper and rotor profile in the installation drawing.
• Mounting hardware and the specified pads are included. Spindles, master cylinder and brake booster are not supplied.

Fitment & Compatibility

Application is controlled by the Big Ford new-style housing flange and a measured 2.50-inch axle offset. The application table lists a 1990 Lincoln Town Car, but the manufacturer does not currently confirm that model application. Do not order for a Town Car by year/model alone; verify the housing-end drawing, bearing retainer and offset first. Check axle-flange diameter, wheel seating, wheel profile and EPB motor clearance through suspension travel. The electronic parking system is for stationary parking hold, not an emergency stop brake. Mounting brackets must allow both service and parking calipers to clear the body and suspension. Use the complete application table below for the individual year, submodel, brake configuration and note attached to each entry.

Ask PMB Performance to review the brake configuration if the vehicle has been modified. Our 20+ years of parts and fitment experience help identify the axle, spindle and wheel details that need to match before the kit is selected.

Manufacturer documentation: Installation instructions; Technical bulletin.

Manufacturer Warning

Applicable to brake pads only: Wilwood warns of exposure to arsenic, cadmium, hexavalent chromium compounds, lead, nickel, cobalt and antimony trioxide, chemicals known to California to cause cancer or reproductive harm. More information: P65Warnings.ca.gov.