Wilwood Front 14-Inch Superlite Brake Conversion for Impreza/Legacy/Outback/Forester/WRX/WRX STI (1999–2021), Black Calipers and GT Rotors

Wilwood's 14-inch Superlite front kit combines black six-piston calipers with GT slotted Spec-37 iron rings and separate hats. It serves the specifically listed Subaru model and equipment combinations, using the compatible factory disc spindle and original hub. Compared with the smaller rotor package, this selected assembly places greater emphasis on verifying the wheel's available internal space before committing to the conversion. 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: 140-12875
• Type: Forged Narrow Superlite 6R Big Brake Front Brake Kit (Hat).
• Calipers: Forged Narrow Superlite 6R; 6-piston; Black Powder Coat.
• Piston bore dimensions: 1.62, 1.12, 1.12 inches; stainless pistons. Caliper mounting: radial.
• Included pad compound: BP-10.
• Rotors: 14.00-inch outside diameter × 1.25-inch width; GT Slotted; Spec-37 Iron; Black Electro Coat surface finish.
• Rotor ventilation: 72 curved vanes.
• Rotor hats: Big Brake Hat - Flared Bell; Aluminum; Black E-Coat.
• Wheel bolt circles: 5 x 3.93; 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: 18 inches. Compare the complete wheel-clearance diagram with both barrel and spoke dimensions.

Fitment & Compatibility

Use the table to confirm trim, build date and rear drum or disc equipment for the relevant vehicle. Check the hub register and bracket mounting arrangement against the instructions, especially after suspension changes. The published 18-inch wheel reference is conditional on the wheel clearance drawing. Both barrel diameter and spoke offset matter. Route the included hoses through steering and suspension movement, then review the caliper/rotor combination with the vehicle's master cylinder and rear brakes.

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.