Wilwood Mustang BMR Rear Brake Package with Red AERO4 Calipers, GT-Slotted 14-Inch Rotors and Internal Parking Brake, 2005–2014

The red GT rear package supplies four-piston AERO4 service brakes and a complete internal-shoe parking arrangement for the documented BMR Mustang rear end. Separate rotor rings bolt to aluminum parking hats, with the kit's cable set and flexlines completing the supplied connections. Founded by Bill Wood in 1977, Camarillo, California-based Wilwood Engineering designs and manufactures disc brake systems and their components. Calipers, brake rotors, master cylinders, valves, fittings and brake lines form its range for motorsport, street-performance and specialized applications. Compatibility depends on choosing those parts around the complete braking system.

Technical Details

• Manufacturer: Wilwood; manufacturer part number: 140-13686-R. 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.

• 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: GT Slotted.
• Rotor-hat material: Aluminum. Hat offset: 1.250 inches; this hat dimension is separate from axle offset.
• Rotor surface finish: Black Electro Coat.

• 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

Verify the BMR rear suspension, axle offset and housing-end pattern for the exact installation. DS1055 identifies possible flange modification to retain the wheel-speed sensor. Check the wheel envelope and ensure the included parking cables and hoses can move without interference.

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 brings over 20 years of parts and brake-fitment experience to helping you select the correct configuration. Send the vehicle details and measured brake interfaces if you need help confirming this kit.