Wilwood Black Rear Dust-Boot Caliper Conversion, SRP Rotors and Small Ford Axle Ends with 2.50-Inch Offset

This rear kit combines black Dynapro calipers, drilled-and-slotted 12.19-inch rotors and enclosed parking-brake shoes. The supplied bracketry is designed around Small Ford housing ends with a 2.50-inch axle offset. Wilwood Engineering’s work covers the design and manufacture of disc brake systems for motorsport, street-performance and specialized applications. Bill Wood founded the company in 1977 in a business now based in Camarillo, California. Its calipers, master cylinders, brake rotors, brake lines, valves and fittings must be selected around the complete system.

Technical Details

• Manufacturer part number: 140-13206-D
• Application and package: Rear Brake Kits - Street Performance; Rear Kits; Disc; Parking; Sold as a kit.
• Rotor dimensions: 12.19 in; 309.63 mm outside diameter; 0.81 in; 20.57 mm thickness
• Rotor construction: Iron; Vented; SRP Drilled & Slotted
• Caliper assembly: Dynapro Dust-Boot; 4 pistons per caliper; Forged Aluminium body; Lug mount
• Piston and finish specification: Aluminum pistons; Black calipers; Black Powder Coat
• Hydraulic inlet: 1/8-27 NPT
• Wheel bolt pattern(s): 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
• Stud-hole / clearance provision: 0.52 in; 13.21 mm; diameter provision, not a thread designation
• Wheel diameter starting requirement: 15 in; 381 mm; verify the individual wheel against the installation drawing
• Rear axle-end interface: Small Ford; axle/flange offset 2.50 in; 63.5 mm
• Included mechanical components: Mounting hardware: Yes; hub(s): No; spindle(s): No
• Hydraulic components supplied: Master cylinder: No; brake booster: No; brake lines: No
• Specified pad compound: BP-10

Fitment & Compatibility

Verify the axle geometry on the 1990 Town Car before choosing this package. Check the wheel mounting and register, and allow for separate hydraulic lines and a compatible parking-brake cable kit. The application table includes a 1990 Lincoln Town Car row, but Wilwood identifies this kit by axle flange and offset. Stock Town Car axle compatibility is not established; confirm the actual or custom axle measurements before purchase.

A maximum flange diameter of 6.61 inches and a 0.050-inch x 45-degree chamfer are specified for rotor clearance. The illustrated register is 2.80 inches; select the documented centering arrangement and match both axle offset and housing-end bolt pattern.

Inspect shock-to-brake clearance as well as the axle dimensions; the installation instructions note that some shock arrangements may need modification or relocation.

Hydraulic hoses/fittings and parking-brake cables, adapters and cable hardware are not included. Choose a compatible cable arrangement for the internal parking brake; universal cable systems may require vehicle or cable modifications.

Kit may fit some 15" wheels. Check wheel clearance diagram in kit installation instructions before purchase.

Separate universal parking-brake cable kit 330-9371 is referenced for completing the internal drum-style parking brake; check its actual cable and vehicle adaptation.

Manufacturer References

• Wilwood exact kit specifications
• Wilwood installation instructions DS1002
• Axle measurement worksheet

With more than 20 years of parts and fitment experience, PMB Performance can help compare the existing brake assembly with the required component.

Review the complete application table below with the year, submodel and installation qualifications above.