This quality RAGE performance big bore exhaust system will not only increase the power output of your engine, but will also sound good too! This system is designed specifically for the VT – VZ Commodore Sedan with either 5L or 5.7L motors. The piping in this system measures 76mm in diameter. Part number BB9062 or BB9068 (HSV version) for the complete kit. Separate components are also available separately if required.