Audi TT TTRS 2.5TFSI Quattro (Non-OPF/GPF Models) YOC: 2016 - 2023 Part: Cat-back Info: Cat Back Non Resonated (Louder) with Cerakote Black Oval Trims tailpipe design: pipe diameter: 76,2mm /3inch EC-approved: No Race system: No Valvesonic: Yes Part no.: SSXAU731