Wilwood Big Ford Dual Dynapro Rear Drag Brakes, 2.36-Inch Offset, Lincoln Town Car (1990)

This Wilwood rear drag package uses dual Dynapro calipers on each 11.44-inch drilled rotor for the Big Ford 2.36-inch-offset housing end. Each caliper has four pistons with 1.38-inch bores; the two-caliper-per-wheel layout must be considered when planning the hydraulic system. The listed Town Car year does not identify a suitable housing flange without measurement. 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, including calipers, brake rotors, master cylinders, valves, fittings, and brake lines for motorsport, street-performance, and specialized applications.

Technical Details

• Manufacturer part number: 140-12553-D
• Type: Dynapro Dual SA Lug Drive Dynamic Rear Drag Brake Kit
• Calipers: Dynapro Lug Mount; 4 pistons per caliper; Type III Anodize.
• Caliper quantity: four total, arranged as two four-piston calipers at each rear wheel.
• Caliper bore sizes: 1.38, 1.38 inches. Piston type: Stainless.
• Included pad compound: BP-28.
• Rotors: 11.44-inch diameter × 0.35-inch thickness; Drilled; Super Alloy; Plain surface; solid, unvented.
• Rear housing end: Big Ford.
• Required axle flange offset: 2.36 inches.
• Wheel bolt circles: 5 X 4.50; 5 X 4.75; 5 X 5.00 inches.
• Included: four rear calipers, pads, rotors, mounting brackets and assembly hardware, rotor hats.
• Hydraulic lines and fittings selected separately. No master cylinder, booster or spindles are supplied.
• Conditional wheel screening size: 15 inches. Use the installation clearance diagram to verify the actual barrel and spoke profile.
• Wheel-stud selection: half-inch wheel studs as specified by the installation drawing; the selected hat has 0.520-inch clearance holes.
• Axle-flange limit: 6.29-inch maximum outside diameter with the specified 0.050-inch × 45-degree chamfer. Match the register and stud configuration to the exact installation drawing.

Fitment & Compatibility

Compare the installed axle with DS915 and the measurement worksheet, checking bolt spacing, bearing/register and offset. This is the Big Ford package rather than the New Style end. Select the correct wheel-stud pattern and verify rotor registration and full wheel clearance. Hydraulic hoses and circuit arrangement require separate planning for the dual-caliper drag configuration, with suitable master-cylinder displacement and brake balance established before use.

Match the individual model, year, submodel and brake configuration in the fitment table below.

Wilwood installation documents: Installation instructions; Technical bulletin.

PMB Performance has over 20 years of brake-system experience. Contact us with your vehicle details and installed brake hardware for help confirming the correct arrangement.

California Proposition 65 warning, 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.