The "Performance" front only kit provides unbeatable value for money over the original equipment brake package. The rotors are larger in diameter and significantly thicker in cross section compared to the OE rotor dimensions, which significantly reduces brake fade under most driving conditions. The "Performance" kit provides the most economical platform for on road confidence, improved brake feel and most importantly, vehicle and passenger safety. Designed and tested to conform to Australian Design Rule ADR31/01. Front Calipers: 4 Piston 2 piece aluminium calipers in red only. Front Rotors: 343 mm x 32 mm 1 piece 48 vane directional rotors with 12 slots as standard. Vehicle Applications: Holden Commodore, VT - VZ, including HSV variants. Pontiac GTO 2004 - 2006 Note: Holden Commodore VB - VS fitment available Ð requires VT - VZ front conversion hubs and donor rear park brake & backing plate assembly. (Not included in kit available at additional cost) Why do I need to Upgrade? If you have fitted a wheel/tyre package that has an effective diameter greater than standard, the brake effectiveness is reduced, the force required on the rotor to slow the car increases by approximately 8% per 50 mm increase in effective tyre diameter. This means the driver needs to push harder on the pedal to stop, and results in increased rotor and pad wear. ABS, ESC/DSC or EBD can't help you under brake fade conditions, the OEM brake systems are designed exclusively for road use and tested to comply with ADR 31/01* If you use your car for any track work, you'll be driving at much higher speeds with much less recovery time and braking many more times than the ADR test. The OEM brake system just isn't required or designed to cope with this. If your vehicle has increased power and torque due to other modifications such as a Harrop supercharger, camshaft, intake and or exhaust upgrades; The faster you can accelerate, the less time you will have to decelerate. Note A minimum of an 17" wheel diameter is required - Caliper sweep template is available above in the download tab to check specific fitments. Optional stainless steel braided brake line available at extra cost. Calipers available in RED only Images are for illustration purposes only *ADR 31/01 Prescribes a fade and recovery test, hot performance where the car is braked from a maximum of 120 to 60 km/h 15 times with 45 seconds between each brake application. The vehicle must then pass an ordinary performance test and achieve 75% of the initial cold test result.