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 systems are developed for a wide range of vehicles and are made in the UK. - 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: Yes - EMark Number: e24 70_157 2007_34 1732 00 Kit comes with: - Twin Front Silencer Assembly - MSAU526 - Rear Silencer - MSAU527 - Polished GT (round) 90 Exhaust Tip, Standard - MSAU529 Vehicle Compatibility: - 2011-2012 Audi RS3 Sportback S tronic (8P)