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 a more aggressive tone if preferred. All products are manufactured from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. Each performance exhaust system is developed for a wide range of vehicles and is made in the UK. - Direct replacement for the original system - Available in multiple configurations for custom sound and tone - Manufactured from 304L aircraft grade stainless steel - Made in the UK and distributed to over 90 countries 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: - 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 - Polished Jet (oval) 104 x 80 Exhaust Tip - MSTIP161 Vehicle Compatibility: - 2017 and later Audi S5 3.0 V6 Turbo Coupe/Cabrio B9 (Non Sport Diff Models Only) - Left Hand Drive Cars Only