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 achieve a more aggressive 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 performance exhaust requirements. All products are made in the UK and distributed to over 90 countries. - Direct replacement for the original exhaust system - Available in multiple configurations for sound and tone customization - Manufactured from 304L aircraft grade stainless steel - Designed for a wide range of vehicles Specifications: - Pipe Diameter: 76.20 - Fitment Time: 1 to 1.5 hours (including removing OE system) - Race Product: No - EMarked: No Kit comes with: - MSAU471: Twin Front Silencer Assembly - MSAU471 - MSAU500: Rear Silencer - MSAU500 Vehicle Compatibility: - 2009-2014 Audi TT Mk2 TT RS Coupe 2.5-litre TFSI quattro - 2009-2014 Audi TT Mk2 TT RS Roadster 2.5-litre TFSI quattro