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. All products are manufactured from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. The systems are developed for a wide range of vehicles and are made in the UK. - Direct replacement for the original exhaust system - Available in multiple configurations for sound customization - Manufactured from 304L aircraft grade stainless steel - Designed for durability in harsh conditions Specifications: - Pipe Diameter: 0.00 - Race Product: No - EMarked: Yes - EMark Number: audia4b9 Kit comes with: - Front Connecting Pipe - MSAU683 - Front Silencer - MSAU684 - Centre Silencer - MSAU685 - Y Pipe - MSAU686 - LH Rear Silencer - MSAU687 - RH Rear Silencer - MSAU688 - LH Silencer Mounting Bracket - MSAU689 - RH Silencer Mounting Bracket - MSAU690 - Brushed Titanium GT (round) 100 Exhaust Tip, Standard - MSVW374 Vehicle Compatibility: - 2016 and later Audi A4 2.0 TFSI B9 Quattro Saloon & Avant (Non OPF/GPF Models including Mild Hybrid & Without Brace Bars)