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 increase in exhaust volume and tone. All products are constructed from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. Performance exhaust systems are developed for a wide range of vehicles, with ongoing research and development to meet performance requirements. All products are manufactured in the UK and distributed to over 90 countries worldwide. - Direct replacement for the original exhaust system - Available in multiple configurations for sound and tone customization - Constructed from 304L aircraft grade stainless steel - Manufactured in the UK and distributed globally Specifications: - Pipe Diameter: 80.00 - Installation Time: 3 to 3.5 hours (including removal of OE system) - Race Product: No - EMarked: No Kit comes with: - F5150: Adaptors to OE - F5150 - MSAU744: LH Front Silencer - MSAU744 - MSAU745: RH Front Silencer - MSAU745 - 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 - MSTIP269: LH Polished Oval Trim - MSTIP269 - MSTIP270: RH Polished Oval Trim - MSTIP270 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 RS7 C8 4.0 V8 bi-turbo (Non OPF/GPF US/ROW Models)