Wilwood Drilled 14.25-Inch Front Brake Conversion, Pontiac G8 (2008–2009), Black Six-Piston Calipers

This Wilwood G8 package combines black AERO6 six-piston calipers with drilled/slotted 14.25-inch front rotor rings. BP-10 pads distinguish the selected drilled configuration from the GT package's friction choice. The separate rotor hats and supplied hoses are matched to the compatible factory hub and upright arrangement on the individual 2008–2009 applications listed below. 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-D
• 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-10.
• Rotors: 14.25-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 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

Check the G8 trim and original front equipment, including the separate GXP entry where applicable. Compare hub seating and lug pattern before assembling the hats. Follow the bracket-shimming instructions to center the calipers over the rotors. Wheel suitability depends on the full template, including spoke offset. Route the front flex lines without tension at steering lock and review pedal travel and rear-brake proportioning before the completed installation is tested.

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.