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. Manufactured from 304L aircraft grade stainless steel, these systems are built to withstand harsh conditions. 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 customization - Constructed from 304L aircraft grade stainless steel - Made in the UK and distributed worldwide Specifications: - Pipe Diameter: 76.20 mm - Fitting Time: 1 to 1.5 hours (including removal of OE system) - Race Product: No - EMarked: No Kit comes with: - MSAU471REP: Non-resonated (louder) front section - MSAU471REP - 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