Wilwood Rear 14-Inch SRP Brakes for Big Ford New Style (2.50-Inch Offset), Black AERO4 & Parking Shoes

This black AERO4 package combines 14-inch SRP drilled-and-slotted service rotors with an internal shoe parking brake. The mounting system requires a Big Ford New Style housing, 2.50-inch axle offset and 6 x 5.5-inch wheel pattern. From its base in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. Founded by Bill Wood in 1977, the company also produces the individual calipers, brake rotors, master cylinders, valves, fittings and brake lines used in these installations. Selection should account for how each component works within the complete brake system.

Technical Details

• Manufacturer part number: 140-18150-D
• Rotor specification: Spec-37 Iron, SRP Drilled & Slotted, vented; 14.00 x 1.10 inches
• Caliper specification: 4-piston AERO4 in Black Powder Coat; radial mount
• Included service pad compound: BP-10; Stainless pistons
• Caliper body material: Forged aluminum
• Hydraulic inlet: 1/8-27 NPT
• Rotor/hat wheel-stud clearance pattern(s): 6 x 5.5 in; 6 x 139.7 mm; match the installed hub/axle pattern
• Housing/flange application: Big Ford New Style
• Required axle offset: 2.50 in; 63.5 mm
• Parking brake: included internal drum/shoe assembly; cable and clevis hardware are not included
• Hydraulic brake hoses: not included; select the correct application-specific lines/fittings
• Wheel clearance: 18-inch wheels may fit; verify the manufacturer’s complete caliper/rotor template for the installed wheel
• Supplied as one kit with mounting hardware; spindles, hubs, master cylinder and booster are not included

Fitment & Compatibility

This 14-inch AERO4 installation is selected by rear-housing geometry: Big Ford New Style large-bearing flange, 2.50-inch axle offset and six-lug 6 x 5.5-inch drilling. A 1990 Town Car model listing does not verify those dimensions or convert its original axle to six lugs. Confirm the actual housing and axle before choosing the kit.

DS1648 includes the internal drum parking-brake assembly, but its cable and clevis connections must be supplied for the vehicle. The maximum axle flange diameter is 6.80 inches with the drawing’s specified chamfer; match the 2.80-inch register. Original hydraulic lines do not directly adapt, so obtain suitable hoses and fittings separately.

Check the complete application table below, including its model-year splits and configuration notes.

Manufacturer Resources

• Exact Wilwood kit specifications and wheel-clearance information
• Installation instructions and component list
• Axle-offset measurement worksheet

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.

With over 20 years of parts and fitment experience, PMB Performance can help review the intended brake installation. Provide your VIN, wheel measurements and any modified axle or spindle details when asking about compatibility.

Vehicle Applications

Application Notes

1. Line kit included (manufacturer): None