The Cat-Back systems are designed as direct replacements for the original exhaust, offering improvements in 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, with ongoing research and development to meet evolving performance requirements. All products are made in the UK and distributed to over 90 countries worldwide. - 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 broad range of vehicles Specifications: - Pipe Diameter: 63.50 - Race Product: No - EMarked: No Kit comes with: - MSAU257: Downpipe (6 speed) - MSAU257 - MSAU258: Y Pipe - MSAU258 - MSAU259: LH Centre Section - MSAU259 - MSAU260: RH Centre Section - MSAU260 - MSAU273: Polished Jet (round) 100 Exhaust Tip - MSAU273 - MSAU261: LH Rear Silencer - MSAU261 - MSAU262: RH Rear Silencer - MSAU262 Vehicle Compatibility: - 2001-2005 Audi A4 1.8T B6 quattro Cabriolet - 2003-2005 Audi A4 1.8T B6 quattro Saloon/Avant 190BHP (6 speed)