The Cat-Back systems are designed as direct replacements for the original exhaust, offering improved sound and aesthetics. Multiple configurations are available, allowing the owner to select the desired exhaust volume and tone. All products are manufactured from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. These performance exhaust systems are engineered for a wide range of vehicles, with ongoing research and development to meet evolving performance requirements. All products are made in the UK and distributed to over 90 countries worldwide. - Direct replacement for the original exhaust system - Available in multiple configurations for custom sound and tone - Manufactured from 304L aircraft grade stainless steel - Designed for a wide range of vehicles Specifications: - Pipe Diameter: 80.00 - Fitment Time: 3 to 3.5 hours (including removing OE system) - Race Product: No - EMarked: No Kit comes with: - MSAU744REP: LH Front Silencer Bypass - MSAU744REP - MSAU745REP: RH Front Silencer Bypass - MSAU745REP - MSAU746: Active Valved Centre Section - MSAU746 - MSAU747: LH Connecting Pipe - MSAU747 - MSAU748: RH Connecting Pipe (To Milltek OPF Back System) - MSAU748 - MSAU749: LH Rear Section - MSAU749 - MSAU750: RH Rear Section - MSAU750 - MSAU751: LH Valved Outlet (Inc Actuator) - MSAU751 - MSAU770: LH Connecting Pipe to OE Downpipe Flange - MSAU771: RH Connecting Pipe to OE Downpipe Flange - MSTIP271: LH Cerakote Black Oval Trim - MSTIP271 - MSTIP272: RH Cerakote Black Oval Trim - MSTIP272 Vehicle Compatibility: - 2020 and later Audi RS6 C8 4.0 V8 bi-turbo Performance Edition (Non OPF/GPF Models - USA/ROW Models) - 2019 and later Audi RS6 C8 4.0 V8 bi-turbo Performance Edition (OPF/GPF Models) - 2019 and later Audi RS7 C8 4.0 V8 bi-turbo (Non OPF/GPF US/ROW Models) - 2019 and later Audi RS7 C8 4.0 V8 bi-turbo (OPF/GPF Models)