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 and tone customization - Constructed from 304L 'Aircraft' Grade stainless steel - Manufactured in the UK and distributed to over 90 countries Specifications: - Pipe Diameter: 70.00 - Race Product: No - EMarked: Yes - EMark Number: AUDIA4B8 Kit comes with: - Centre Silencer - MSAU487 - Y Pipe - MSAU488 - LH Rear Silencer Assembly - MSAU489 - RH Rear Silencer Assembly - MSAU490 - Polished GT (round) 100 Exhaust Tip - MSAU491 - Downpipe - MSAU496 Vehicle Compatibility: - 2008-2011 Audi A4 2.0 TFSI S line B8 (2WD and quattro manual-only) Saloon & Avant