The range of Cat-Back systems is designed for those seeking to enhance exhaust sound and aesthetics. Each system is a direct replacement for the original, available in multiple configurations to allow 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. The performance exhaust systems are developed for a wide range of vehicles, with ongoing research and development to meet current performance exhaust needs. All products are made in the UK and distributed to over 90 countries. - Direct replacement for the original exhaust system - Available in multiple configurations for volume and tone adjustment - Manufactured from 304L aircraft grade stainless steel - Made in the UK and distributed worldwide Specifications: - Pipe Diameter: 70.00 - Race Product: No - EMarked: No Kit comes with: - LH Front Pipe Assembly - MSAU568 - RH Front Pipe Assembly - MSAU569 - Centre Silencer - MSAU570 - LH ValveSonic Rear Silencer - MSAU627 - RH ValveSonic Rear Silencer - MSAU628 - Cerakote Black GT (round) 100 Exhaust Tip, Standard - MSVW372 Vehicle Compatibility: - 2012-2018 Audi S6 4.0 TFSI C7 quattro - 2012-2018 Audi S7 Sportback 4.0 TFSI quattro S tronic