Audi RS3 Sportback S tronic (8P) YOC: 2011 - 2012 Part: Cat-back Info: Cerakote Black Tips. Includes Active Exhaust Valve. tailpipe design: Twin 90mm GT90 pipe diameter: 76,2mm /3inch EC-approved: Yes Race system: No Valvesonic: No Part no.: SSXAU278