Wilwood Front Superlite 6R Brake Kit for Impreza/Legacy/Outback/Forester/WRX/WRX STI (1999–2021), Black Calipers, GT Slotted 13.06-Inch Rotors

The black Superlite 6R package combines six-piston calipers with 13.06-inch GT slotted rotors for the specified Subaru front disc-spindle applications. Separate aluminum hats and application-specific lines accompany the conversion hardware. Coverage extends beyond WRX to the individual Impreza, Legacy, Outback and Forester entries, with different rear-brake and production-split requirements across those vehicles. 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: 140-12874
• 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: 13.06-inch outside diameter × 1.25-inch width; GT Slotted; Spec-37 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 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: 17 inches. Compare the complete wheel-clearance diagram with both barrel and spoke dimensions.

Fitment & Compatibility

Read the complete vehicle row, including disc-versus-drum rear brakes and the October 2001 production split where shown. WRX and WRX STI coverage is trim- and year-specific. Verify the original front hub registration and upright before assembly. Set rotor and caliper position according to the installation procedure, and compare the actual wheel with the 17-inch minimum clearance template. Route hoses through steering travel and confirm the completed brake system remains correctly balanced.

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.