Wilwood Rear GT-Slotted Brake Kit — Pontiac GTO (2004–2006), Red Dynapro DS, 12.19-Inch Rotors

GT-slotted rotors and red Dynapro calipers define this rear GTO conversion. The 12.19-inch rotor diameter, BP-20 pad set and retained factory parking-brake interface must be considered together with the front brakes when evaluating system balance. Bill Wood founded Wilwood Engineering in 1977; the company is based in Camarillo, California. Wilwood designs and manufactures calipers, brake rotors, master cylinders, valves, fittings and brake lines as part of its disc brake systems and component range for motorsport, street-performance and specialized applications. Each component must suit the requirements of the complete brake installation.

Technical Details

• Manufacturer part number: 140-8754-R
• Caliper body: Forged aluminum; hydraulic inlet: 1/8-27 NPT
• Rotor surface finish: Black Electro Coat; rotors are not supplied burnished
• Rotor/hat wheel-stud clearance pattern(s): 5 x 4.75 in; 5 x 120.65 mm; the existing hub/axle pattern is retained
• Hat/rotor stud-hole clearance: 0.52 in; 13.21 mm; this is not a wheel-stud thread designation
• Parking brake: retain the original internal parking-brake mechanism; no replacement cable kit is supplied
• Hydraulic hoses: not included; match the separate lines and fittings to the application
• Kit includes calipers, rotors and mounting hardware; replacement hubs and spindles are not included
• Not included: master cylinder and brake booster
• Wheel clearance: 15-inch wheels may fit; check the complete manufacturer caliper/rotor template
• Quantity: sold as one axle kit
• Service calipers: 4-piston Dynapro Dust Seal Radial Mount; Red Powder Coat; radial mounting
• Brake rotors: 12.19 x 0.81 inches; Iron; GT Slotted; vented
• Included pad compound: BP-20; pistons: stainless steel

Fitment & Compatibility

Fits the listed 2004–2006 Pontiac GTO rear applications while retaining the original internal parking-brake mechanism. The supplied service rotors incorporate the parking-drum interface; existing hubs and parking-brake components must be serviceable.

The stock backing plate/caliper bracket and dust shield require the modifications in DS494. Brake hoses are not included. Wilwood currently lists rear flexlines 220-8756 for 2005–2006 GTO; verify the 2004 hose arrangement before ordering, because the older instruction-sheet hose reference differs.

Review the complete fitment table below before purchase, retaining the restrictions attached to the chosen vehicle.

Manufacturer Resources

• Wilwood kit specifications and wheel-clearance information
• Installation instructions and component list

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.

For fitment help, contact PMB Performance with your VIN and details of any axle, spindle or brake changes. Our team has over 20 years of experience checking parts and fitment, including the dimensions that a model-year search cannot establish.

Vehicle Applications

Application Notes

1. Kit may fit some 15" wheels. Check wheel clearance diagram in kit installation instructions before purchase.
2. Line kit included (manufacturer): None
3. Rear line-kit reference: 220-8756