Audi A1 40TFSI 5 Door 2.0 (200PS) with OPF/GPF YOC: 2019 - 2023 Part: Cat-back Info: GPF/OPF Back System with Cerakote Black GT-76 Trims - EC Approved tailpipe design: Twin 76.2mm GT76 pipe diameter: 70mm /2,76inch EC-approved: Yes Race system: No Valvesonic: No Part no.: SSXAU878