Wilwood Red Rear AERO4 Kit with Drilled Rotors, Internal Parking Shoes and Cables for Ford Mustang BMR Suspension, 2005–2014

Red AERO4 calipers and drilled-and-slotted 14-inch rings identify this BMR Mustang rear conversion. It includes the internal-shoe parking components and specified cable kit shown in DS1055, together with flexible hydraulic lines for the service calipers. Wilwood Engineering has designed and manufactured disc brake systems and components since Bill Wood founded the company in 1977. From its Camarillo, California base, it supplies motorsport, street-performance and specialized applications with calipers, brake rotors, master cylinders, valves, fittings and brake lines. Selecting those components requires a match to the complete system.

Technical Details

• Wheel interface: 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. Rotor/hat wheel-stud clearance: 0.520 in; 13.21 mm.
• Nominal minimum wheel diameter: 18 in; 457.2 mm. Verify the full wheel-clearance drawing; diameter alone does not establish barrel or spoke clearance.
• Housing/spindle flange: BMR Rear Suspension. Flange/axle offset: 0.00 in; 0 mm.

• Rotor: 14.00 in; 355.6 mm outside diameter; 1.10 in; 27.94 mm thickness. Material: Spec-37 Iron. Construction: Vented. Friction-face style: SRP Drilled & Slotted.
• Rotor-hat material: Aluminum. Hat offset: 1.250 inches; this hat dimension is separate from axle offset.
• Rotor surface finish: Black Electro Coat.

• Manufacturer: Wilwood; manufacturer part number: 140-13686-DR. Supplied quantity: Sold as a kit.
• Application category: Rear Brake Kits - Street Performance. Axle/spindle category: Rear Kits. Brake function: Disc; Parking.
• Separate wheel hubs included: No. Retain only the hub arrangement specified for this kit.
• Mounting hardware included: Yes. Spindles included: No. Master cylinder included: No. Brake booster included: No.
• Flexible brake lines included: Yes; matched line kit 220-9248, 18.00 inches nominal length.
• Internal parking-shoe assemblies are included. Parking cable kit 330-12335 is also supplied; verify its vehicle routing and attachment.

• Calipers: 4 stainless pistons per caliper; radial mounting; forged aluminium bodies. Color: Red. Finish: Red Powder Coat. Inlet thread: 1/8-27 NPT.
• Caliper family: AERO4. Brake-pad compound: BP-20.

Fitment & Compatibility

Match the actual BMR axle and suspension rather than assuming factory Mustang rear hardware is equivalent. Check the housing-flange relief and wheel-speed-sensor clearance described in DS1055. Verify the parking control, line routing and complete wheel outline before final assembly.

DS1055 identifies the supplied parking-shoe assemblies and cable kit. The housing flange may need clearance relief to reinstall the wheel-speed sensor, and shock clearance must be checked as described in the instructions.

Use the fitment table below for the complete model, year, submodel and brake-option conditions; every listed condition must match the installed vehicle.

Manufacturer Documents

• Wilwood product specifications and wheel-clearance drawing
• Installation instructions

PMB Performance can help work through the mounting and wheel-clearance details before purchase. Our parts and fitment support is backed by over 20 years of experience; include measurements of any modified axle or spindle.