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. Each system is manufactured from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. All products are made in the UK and distributed to over 90 countries. - Direct replacement for the original exhaust system - Available in multiple configurations for sound and tone customization - Manufactured from 304L aircraft grade stainless steel - Made in the UK and distributed worldwide Specifications: - Pipe Diameter: 76.20 - Installation Time: 1 to 1.5 hours (including removal of OE system) - Race Product: No - EMarked: No Kit comes with: - F5066: Adapter for OE Downpipe 76.2 O.D. to 65 I.D. 110 long - MSAU618REP: Centre Silencer Delete Pipe - MSAU618REP - MSAU674: Rear Silencer - MSAU674 - MSTIP161: Polished Jet (oval) 104 x 80 Exhaust Tip - MSTIP161 Vehicle Compatibility: - 2015-2018 Audi TT Mk3 TTS 2.0TFSI Quattro (Non-OPF/GPF Models) - 2019 and later Audi TT Mk3 TTS 2.0TFSI Quattro (OPF/GPF Models)