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 increase in exhaust volume or a more aggressive tone. All products are manufactured from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. The range is designed for a wide variety of vehicles, with ongoing research and development to meet performance exhaust requirements. - Direct replacement for the original exhaust system - Available in multiple configurations for sound and tone customization - Manufactured from 304L aircraft grade stainless steel - Made in the UK and distributed to over 90 countries Specifications: - Pipe Diameter: 63.50 - Installation Time: 1 to 1.5 hours (including removal of OE system) - Race Product: No - EMarked: Yes - EMark Number: AudiS4S5B9 Kit comes with: - LH Downpipe - MSAU693 - RH Downpipe - MSAU694 - Connecting Pipe - MSAU698 - LH Rear Silencer with Valve - MSAU699 - RH Rear Silencer with Valve - MSAU700 - LH Mounting Bracket - MSAU701 - RH Mounting Bracket - MSAU702 - Front Silencer - MSAU707 - Carbon Fibre Jet (round) 100 Exhaust Tip, Standard - MSTIP226 Vehicle Compatibility: - 2017 and later Audi S5 3.0 V6 Turbo Coupe/Cabrio B9 (Non Sport Diff Models Only) - Left Hand Drive Cars Only