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

Wilwood pairs drilled Super Alloy rings with single Dynapro calipers in this rear drag package for the Big Ford 2.36-inch-offset end. Lug-drive hats carry the 11.44-inch solid rotors, with BP-28 pads supplied. Selection depends on the measured housing flange rather than the vehicle badge, particularly for the 1990 Town Car application when a race-prepared rear axle is fitted. 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: 140-12547-D
• Type: Dynapro SA Lug Drive Dynamic Rear Drag Brake Kit
• Calipers: Dynapro Lug Mount; 4 pistons per caliper; Type III Anodize.
• Caliper bore sizes: 1.75, 1.75 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: paired 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

DS909 defines the bearing, flange and axle-offset checks for this Big Ford arrangement. It differs from the New Style 2.50-inch mounting package, so those ends should not be treated as interchangeable. Verify stud pattern, rotor registration and wheel clearance before assembly. Use the installation for the intended drag-racing duty and confirm the hydraulic system's displacement and balance with the front brakes.

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.