Wilwood Rear Black Hydro-Mechanical Parking Caliper/GT Rotor Package, Ford Focus ST (2013–2018), 12.88-Inch Rings

Black combination parking-brake calipers and GT slotted 12.88-inch rotors form this Wilwood rear package for the listed Ford Focus ST models. The CPB mechanism combines hydraulic service braking with mechanical parking engagement inside the caliper, without a separate parking-shoe conversion. Pads, aluminum rotor hats and rear flex lines are supplied for the compatible original hub arrangement. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings, and brake lines for motorsport, street-performance, and specialized applications.

Technical Details

• Manufacturer part number: 140-13031
• Type: Combination Parking Brake Caliper Rear Brake Kit.
• Calipers: Combination Parking Brake; 1-piston; Black Powder Coat.
• Piston bore dimensions: 1.34 inches; steel pistons. Caliper mounting: radial.
• Included pad compound: BP-10.
• Rotors: 12.88-inch outside diameter × 0.81-inch width; GT Slotted; Iron; Black Electro Coat surface finish.
• Rotor ventilation: 48 curved vanes.
• Rotor hats: Big Brake Hat - Flared Bell; Aluminum; Black E-Coat.
• Wheel bolt circles: 5 x 4.25; 5 x 4.50 inches.
• Included: paired calipers, pads, rotors and mounting hardware, caliper mounting brackets, rotor hats.
• Application-specific hydraulic flex lines included.
• Conditional wheel minimum: 17 inches. Compare the complete wheel-clearance diagram with both barrel and spoke dimensions.
• Required parking-cable adaptation: modify the new caliper cable bracket to accommodate the original cable end, following DS977 before installation.

Fitment & Compatibility

Match the 2013–2018 ST application and inspect the original hub registration before assembling the hats. Connect and adjust the parking cables according to the instructions so both caliper levers release fully. Check caliper centering, rotor freedom and hose routing across suspension travel. Use the complete 17-inch minimum wheel diagram to assess spoke and barrel clearance. Confirm pedal travel and rear-brake proportioning with the installed front package before testing parking hold and service braking.

Match the individual year, model, submodel and equipment conditions in the fitment table below.

Wilwood installation documents: Installation instructions.

PMB Performance has over 20 years of brake-system experience. Contact us with the vehicle and installed hardware details for help confirming the complete setup.

Manufacturer warning, brake pads only: 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.