This 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, with multiple configurations available 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 demands. All products are made in the UK and distributed to over 90 countries worldwide. - Direct replacement for the original exhaust system - Multiple configurations for sound and tone customization - Manufactured from 304L aircraft grade stainless steel - Made in the UK and distributed globally Specifications: - Pipe Diameter: 63.50 - Fitment Time: 1 to 1.5 hours (including removal of OE system) - Race Product: No - EMarked: Yes - EMark Number: AudiS4S5B9 Kit comes with: - MSAU693: LH Downpipe - MSAU694: RH Downpipe - MSAU695: Front Silencer - MSAU701: LH Mounting Bracket - MSAU702: RH Mounting Bracket - MSAU711: Connecting Pipe - MSAU712: LH Rear Silencer with Valve - MSAU713: RH Rear Silencer with Valve - MSTIP161: Polished Jet (oval) 104 x 80 Exhaust Tip Vehicle Compatibility: - 2016 and later Audi S4 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (Sport Diff Models Only & Without Brace Bars) - Left Hand Drive Cars Only - 2017 and later Audi S5 3.0 V6 Turbo Sportback B9 (Sport Diff Models Only & without Brace Bars) - Left Hand Drive Cars Only