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 achieve a more aggressive tone if preferred. Each system is manufactured from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. All products are made in the UK and distributed to over 90 countries. - Direct replacement for the original exhaust system - Available in multiple configurations for sound and tone customization - Manufactured from 304L aircraft grade stainless steel - Made in the UK and distributed worldwide Specifications: - Pipe Diameter: 70.00 - Fitment Time: 1 to 1.5 hours (including removal of OE system) - Race Product: No - EMarked: No Kit comes with: - Y Pipe - MSAU488 - Connecting Pipe - MSAU523 - LH Rear Silencer Assembly - MSAU524 - RH Rear Silencer Assembly - MSAU525 - Adapter Pipe - MSAU557 - Cerakote Black GT (round) 80 Exhaust Tip, LH Twin Tip - MSTIP218 - Cerakote Black GT (round) 80 Exhaust Tip, RH Twin Tip - MSTIP219 Vehicle Compatibility: - 2009-2011 Audi A4 2.0 TDi B8 140PS / 177PS 2WD Saloon and Avant (S line models only) - 2009-2011 Audi A4 2.0 TDi B8 177PS quattro Saloon and Avant - 2007-2012 Audi A5 Coupe 2.0 TDi