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 exhaust volume and 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 durability in harsh conditions Specifications: - Pipe Diameter: 0.00 - Race Product: No - EMarked: No Kit comes with: - Front Connecting Pipe - MSAU683 - Front Silencer Delete Pipe - MSAU684REP - Centre Silencer - MSAU685 - Y Pipe - MSAU686 - LH Rear Silencer - MSAU687 - RH Rear Silencer - MSAU688 - LH Silencer Mounting Bracket - MSAU689 - RH Silencer Mounting Bracket - MSAU690 - Polished GT (round) 100 Exhaust Tip, Standard - MSVW373 Vehicle Compatibility: - 2016 and later Audi A4 2.0 TFSI B9 Quattro Saloon & Avant (Non OPF/GPF Models including Mild Hybrid & Without Brace Bars)