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 and a more aggressive tone if preferred. 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 evolving performance requirements. - Direct replacement for the original exhaust system - Available in multiple configurations for sound customization - Constructed from 304L aircraft grade stainless steel - Designed and manufactured in the UK Specifications: - Pipe Diameter: 63.50 - Race Product: No - EMarked: No Kit comes with: - Downpipe (6 speed) - MSAU257 - Y Pipe - MSAU258 - LH Centre Section - MSAU259 - RH Centre Section - MSAU260 - LH Rear Silencer - MSAU261 - RH Rear Silencer - MSAU262 - Polished GT (round) 90 Exhaust Tip - MSTIP135 Vehicle Compatibility: - 2003-2005 Audi A4 1.8T B6 quattro Saloon/Avant 190BHP (6 speed)