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 or a more aggressive tone. Manufactured from 304L 'Aircraft' Grade stainless steel, these systems are built to withstand harsh conditions. 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 - Constructed from 304L 'Aircraft' Grade stainless steel - Made in the UK and distributed globally Specifications: - Pipe Diameter: 76.20 - Installation Time: 1.5 to 2 hours (including removal of OE system) - Race Product: No - EMarked: No Kit comes with: - Adapter Pipe for Catback - MSAU642 - Centre Silencer Delete Pipe - MSAU643REP - Rear Silencer - MSAU644 - LH Rear Connecting Pipe (inc. Electric Valve) - MSAU645 - RH Rear Connecting Pipe - MSAU646 - Cerakote Black GT (round) 90 Exhaust Tip, LH - MSTIP184 - Cerakote Black GT (round) 90 Exhaust Tip, RH - MSTIP185 Vehicle Compatibility: - 2014-2018 Audi S1 2.0 TFSI quattro