Wilwood Red AERO4 Rear Brake and Electronic Parking Kit, SRP 14-Inch Rotors for Small Ford Axles with 2.50-Inch Offset

Red AERO4 service calipers pair with SRP rear rotors and a separate electric parking brake. Verify the Small Ford housing and 2.50-inch offset. This conversion keeps hydraulic service braking and electric parking in separate calipers selected for the documented mounting arrangement. From its base in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems and components. Bill Wood founded the company in 1977. Its calipers, brake rotors, valves, master cylinders, brake lines and fittings serve street-performance, motorsport and specialized applications. Select each component according to the requirements of the complete braking system.

Technical Details

• Service-brake configuration: 4-piston AERO4; Red Powder Coat
• Brake pad selection supplied: BP-10
• Caliper fluid connection: 1/8-27 NPT
• Caliper mounting: Radial; piston material: stainless steel
• Rotor assembly dimensions and material: 14.00 × 1.10 inches; Spec-37 Iron; vented; SRP Drilled & Slotted
• Nominal wheel diameter reference: 18 in; verify the complete clearance drawing
• Required rear-axle interface: Small Ford; axle offset 2.50 in
• Rotor / hub bolt-circle specification: 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
• Included installation items: mounting hardware
• Hydraulic flexlines: Not included
• Quantity: Sold as a kit.
• Separate components required: spindles, wheel hubs, master cylinder, brake booster
• Manufacturer part number: 140-16175-DR
• Kit function: Rear Brake Kits - Street Performance; rear position

Fitment & Compatibility

This conversion is selected by the Small Ford housing flange and a measured 2.50-inch axle offset. Compare the housing bolt centers, bearing retainer, axle registration and offset with the Wilwood worksheet before choosing a kit. The 1990 Lincoln Town Car entry in the table below requires individual axle verification; model year alone does not establish compatibility. The electric parking system includes its control unit and harness and is for parking, not an emergency stopping brake. Provide compatible hydraulic lines separately and check the complete wheel envelope against DS-1424.

Wilwood product specifications · Installation instructions · Technical bulletin

With over 20 years of parts and fitment experience, PMB Performance can help compare the actual axle flange, rotor relationship and hydraulic arrangement. Share measurements and photographs of the installed assembly before ordering.

Manufacturer warning — brake pads only: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.