The Milltek Sport full system completely replaces the OEM exhaust system. It fits the vehicle from the engine block or turbocharger to the tailpipes of the exhaust system. The full Milltek Sport exhaust system delivers enhanced performance and sound. All Milltek Sport performance exhaust systems are designed for a wide range of vehicles, with continuous research and development to meet performance exhaust requirements. All products are made in the UK and distributed to more than 90 countries worldwide. - Completely replaces the OEM exhaust system - Fits from engine block or turbocharger to tailpipes - Made in the UK and distributed globally Specifications: - Pipe Diameter: 69.85 - Race Product: Yes - EMarked: No Kit comes with: - MSAU589: ValveSonic LH Rear Silencer - MSAU589 - MSAU590: ValveSonic RH Rear Silencer - MSAU590 - MSAU611: Centre Silencer (Road+) - MSAU611 - MSAU663: LH 76mm Primary Cat Bypass Downpipe (fits LH Turbo) - MSAU663 - MSAU664: RH 76mm Primary Cat Bypass Downpipe (fits RH Turbo) - MSAU664 - MSAU665: LH Secondary 100-CPSI Hi-Flow Sports Catalyst (under car) - MSAU665 - MSAU666: RH Secondary 100-CPSI Hi-Flow Sports Catalyst (under car) - MSAU666 Vehicle Compatibility: - 2013-2018 Audi RS6 C7 4.0 TFSI biturbo quattro including Performance Edition - 2013-2018 Audi RS7 C7 Sportback 4.0 V8 TFSI biturbo including Performance Edition