Wilwood Red AERO6 Front Package with Drilled 14-Inch Rotors, Impreza/Legacy/Outback/Forester/WRX/WRX STI (1999–2021)

Red AERO6 calipers, drilled/slotted 14-inch rotor rings and BP-20 pads make up this Wilwood front package for the supported Subaru configurations. The six-piston calipers use kit-specific radial mounting brackets, with aluminum hats connecting the Spec-37 rings to the compatible original hubs. Application-specific hoses are included; suspension or hub changes still need comparison with the installation geometry. 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: 140-12876-DR
• Type: AERO6 Big Brake Front Brake Kit.
• Calipers: AERO6; 6-piston; Red Powder Coat.
• Piston bore dimensions: 1.62, 1.12, 1.12 inches; stainless pistons. Caliper mounting: radial.
• Included pad compound: BP-20.
• Rotors: 14.00-inch outside diameter × 1.25-inch width; SRP Drilled & 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

Identify the precise production year and trim, taking note of rear drum/disc requirements and the early build-date split. Inspect hub seating and follow the caliper-centering procedure with the rotor installed. Evaluate the wheel's full inside profile against the template rather than relying on an 18-inch designation. Confirm hose clearance throughout steering and suspension movement, then check the complete hydraulic balance and the suitability of the selected pad compound for the vehicle's use.

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.