Wilwood GT Slotted Rear Brake Kit with Red CPB Calipers for Ford Focus ST (2013–2018), 12.88-Inch Rotors

GT slotted rotors and red combination parking-brake calipers define this Wilwood Focus ST rear conversion. The 12.88-inch rotor assembly uses separate hats and retains the compatible original hub, with supplied rear lines connecting the hydraulic calipers. Mechanical parking engagement operates within the CPB caliper, making correct cable attachment and full lever release important parts of the installation. 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-R
• Type: Combination Parking Brake Caliper Rear Brake Kit.
• Calipers: Combination Parking Brake; 1-piston; Red 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

Confirm the individual ST application and inspect the original hub and parking cables. Set rotor and caliper alignment before adjusting the cable mechanism as directed. Check that the levers return fully and that neither rear rotor drags with the parking brake released. Compare the actual rim with the full 17-inch minimum drawing. Route the hoses away from moving parts and verify hydraulic balance with the front brakes before checking service braking and parking hold.

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.