Wilwood Front AERO6 Brake Kit for Pontiac G8 (2008–2009), Black Calipers, 14.25-Inch GT Slotted Rotors

Black AERO6 calipers and GT slotted 14.25-inch Spec-37 rotors make up this Wilwood front conversion for the listed Pontiac G8 applications. The six-piston calipers use BP-20 pads, with separate aluminum hats and included front flex lines. This selected package retains the compatible factory hub and disc spindle, requiring direct wheel and original-equipment checks across the G8 trim range. 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: 140-12929
• Type: AERO6 Big Brake Front Brake Kit.
• Calipers: AERO6; 6-piston; Black Powder Coat.
• Piston bore dimensions: 1.62, 1.12, 1.12 inches; stainless pistons. Caliper mounting: radial.
• Included pad compound: BP-20.
• Rotors: 14.25-inch outside diameter × 1.25-inch width; GT Slotted; Spec-37 Iron; Plain surface finish.
• Rotor ventilation: 72 curved vanes.
• Rotor hats: Big Brake Hat - Flared Bell; Aluminum; Black E-Coat.
• Wheel bolt circles: 5 x 4.72 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

Confirm Base, GT or GXP coverage for the precise year rather than treating all factory brake packages alike. Inspect hub registration and compare the mounting arrangement with the installation document. Follow the rotor and bracket assembly procedure to establish alignment. Use the full wheel diagram to check spoke depth and barrel shape despite an 18-inch rim designation. Secure the supplied lines through steering travel and assess brake balance with the existing rear package.

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.