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 performance exhaust systems are developed for a wide range of vehicles and are made in the UK. - Direct replacement for the original system - Available in multiple configurations for sound and tone adjustment - Manufactured from 304L aircraft grade stainless steel - Designed for durability in harsh conditions Specifications: - Pipe Diameter: 69.85 - Fitment Time: 1 to 1.5 hours (including removing OE system) - Race Product: No - EMarked: No Kit comes with: - Centre Silencer Delete Pipe - MSAU289REP - Rear Silencer - MSAU347 Vehicle Compatibility: - 2006-2012 Audi S3 2.0 T quattro 3-Door 8P