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 a more aggressive tone if preferred. All products are manufactured from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. The systems are designed for a wide range of vehicles and are produced in the UK. - Direct replacement for the original exhaust system - Available in multiple configurations for sound and tone customization - Manufactured from 304L aircraft grade stainless steel - Designed and made in the UK Specifications: - Pipe Diameter: 70.00 - Installation Time: 2 to 2.5 hours (including removal of OE system) - Race Product: No - EMarked: No Kit comes with: - LH Lower Downpipe - MSAU723 - RH Lower Downpipe - MSAU724 - Front Silencer Delete Pipe - MSAU726REP - Centre Silencer Delete Pipe - MSAU727REP - LH Rear Silencer (ECE) Valved - MSAU730 - RH Rear Silencer (ECE) Valved - MSAU731 - Brushed Titanium Jet (Oval) 170 x 107 Exhaust Tip - MSTIP259 - Brushed Titanium Jet (Oval) 170 x 107 Exhaust Tip - MSTIP260 Vehicle Compatibility: - 2018 and later Audi RS4 B9 2.9 V6 Turbo Avant (Non OPF/GPF Models)