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 range is continuously evolving to meet the demands of a wide variety of vehicles. - Direct replacement for the original exhaust system - Available in multiple configurations for sound and tone customization - Manufactured from 304L aircraft grade stainless steel - Designed and made in the UK Specifications: - Pipe Diameter: 76.20 mm - Installation Time: 1 to 1.5 hours (including removal of OE system) - Race Product: No - EMarked: No Kit comes with: - Twin Front Silencer Bypass Assembly - MSAU526REP - Rear Silencer - MSAU527 - Polished GT (round) 90 Exhaust Tip, Standard - MSAU529 Vehicle Compatibility: - 2011-2012 Audi RS3 Sportback S tronic (8P)