The Cat-Back systems are designed to improve both sound and aesthetics, serving as a direct replacement for the original exhaust system. Multiple configurations are available, allowing the owner to select the desired increase in exhaust volume and achieve a more aggressive tone if preferred. All products are constructed from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. The performance exhaust systems are designed for a wide range of vehicles and are manufactured in the UK. - 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 Specifications: - Pipe Diameter: 60.30 - Installation Time: 2 to 3 hours (including removal of OE system) - Race Product: No - EMarked: No Kit comes with: - LH Downpipe - MSAU461 - RH Downpipe - MSAU462 - Centre Silencer - MSAU464 - LH Rear Silencer Delete Pipe - MSAU467 - RH Rear Silencer Bypass Pipe - MSAU468 - Front Silencer - MSAU512 - Brace Bar - MSAU513 - Cerakote Black Jet (oval) 150 x 95 Exhaust Tip, LH - MSTIP144 - Cerakote Black Jet (oval) 150 x 95 Exhaust Tip, RH - MSTIP145 Vehicle Compatibility: - 2009-2011 Audi S5 3.0 TFSI B8 Coupe & Cabriolet (S tronic)