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 systems are manufactured from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. These performance exhaust systems are suitable for a wide range of vehicles. All products are made in the UK and distributed globally. - 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 worldwide Specifications: - Pipe Diameter: 63.50 - Fitment Time: 1 to 1.5 hours (including removal of OE system) - Race Product: No - EMarked: No Kit comes with: - MSAU693: LH Downpipe - MSAU693 - MSAU694: RH Downpipe - MSAU694 - MSAU698: Connecting Pipe - MSAU698 - MSAU699: LH Rear Silencer with Valve - MSAU699 - MSAU700: RH Rear Silencer with Valve - MSAU700 - MSAU701: LH Mounting Bracket - MSAU701 - MSAU702: RH Mounting Bracket - MSAU702 - MSTIP194: Burnt Titanium GT (round) 100 Exhaust Tip, Standard - MSTIP194 - MSAU696: LH Front Silencer Rep Pipe - MSAU696 - MSAU697: RH Front Silencer Rep Pipe - MSAU697 Vehicle Compatibility: - 2016 and later Audi S4 3.0 Turbo V6 B9 Saloon/Sedan & Avant (Non Sport Diff Models) Left Hand Drive - 2017 and later Audi S5 3.0 V6 Turbo Sportback B9 (Non Sport Diff Models Only) Left Hand Drive