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 tone. All products are constructed from 304L 'Aircraft' Grade stainless steel to ensure durability in harsh conditions. Performance exhaust systems are developed for a wide range of vehicles, with continuous research and development to meet evolving demands. All products are manufactured 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 - Constructed from 304L 'Aircraft' Grade stainless steel - Manufactured in the UK and distributed globally Specifications: - Pipe Diameter: 70.00 - Race Product: No - EMarked: Yes - EMark Number: AUDIA4B8 Kit comes with: - MSAU487: Centre Silencer - MSAU487 - MSAU488: Y Pipe - MSAU488 - MSAU489: LH Rear Silencer Assembly - MSAU489 - MSAU490: RH Rear Silencer Assembly - MSAU490 - MSAU492: Polished GT (round) 80 Exhaust Tip, LH Twin Tip - MSAU492 - MSAU493: Polished GT (round) 80 Exhaust Tip, RH Twin Tip - MSAU493 - MSAU544: Downpipe (Tiptronic) - MSAU544 Vehicle Compatibility: - 2008-2011 Audi A4 2.0 TFSI S line B8 (2WD and quattro Tiptronic-only) Saloon & Avant - 2008-2012 Audi A5 Coupe S line 2.0 TFSI 2WD and quattro S tronic - 2009-2012 Audi A5 Sportback 2.0 TFSI 2WD and quattro Multitronic / S tronic