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 is designed to deliver enhanced performance and sound. All Milltek Sport performance exhaust systems are developed for a wide range of vehicles, with ongoing research and development to meet performance exhaust requirements. All products are manufactured in the UK and distributed to over 90 countries worldwide. - Replaces the entire OEM exhaust system - Fits from engine block or turbocharger to tailpipes - Manufactured in the UK - Distributed to more than 90 countries 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 - MSAU665REP: LH Connecting Pipe to Milltek Catback - MSAU665REP - MSAU666REP: RH Connecting Pipe to Milltek Catback - MSAU666REP 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