The Cat-Back systems are designed to improve exhaust sound and aesthetics, serving as a direct replacement for the original system. Multiple configurations are available, allowing the owner to select the desired increase in exhaust volume and achieve a more aggressive tone if preferred. 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 customization - Constructed from 304L aircraft grade stainless steel - Made in the UK and distributed globally Specifications: - Pipe Diameter: 76.20 - Fitment Time: 1 to 1.5 hours (including removing OE system) - Race Product: No - EMarked: Yes - EMark Number: audittrsmk3 Kit comes with: - Front Silencer - MSAU715 - Hollowtek Rear Silencer - Valved with no motors - MSAU716 - Brushed Titanium Jet (Oval) 170 x 107 Exhaust Tip - MSTIP255 - Brushed Titanium Jet (Oval) 170 x 107 Exhaust Tip - MSTIP256 Vehicle Compatibility: - 2016 and later Audi TT Mk3 TTRS 2.5TFSI Quattro (Non-OPF/GPF Models) - 2019 and later Audi TT Mk3 TTRS 2.5TFSI Quattro (OPF/GPF Models)