Wilwood Dual-Caliper Rear Drag Kit, Big Ford New Style 2.50-Inch Offset, Lincoln Town Car (1990)

Wilwood equips this rear drag kit with two separate four-piston Dynapro calipers at each wheel. The drilled 11.44-inch Super Alloy rotors use lug-drive hats for the Big Ford New Style end and 2.50-inch axle offset. This dual-caliper arrangement differs hydraulically from the single-caliper kit, and the 1990 Town Car application still requires verification of the actual modified axle. 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: 140-12552-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 New Style.
• Required axle flange offset: 2.50 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

Use DS914 to match flange spacing, bearing/register dimensions and axle offset. Confirm the half-inch wheel-stud arrangement and hat pattern before checking rotor alignment. The axle uses four separate calipers, arranged as two units at each wheel. Assess the complete hydraulic circuit and front/rear balance for the intended drag duty, then compare the wheel's actual barrel and spokes with the clearance drawing.

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.