Porsche 911 992.1 GT3 YOC: 2021 - Part: Rear Silencer(s) Info: Works with PSE Valve Switch - with GT-100 Cerakote Black Trims tailpipe design: 100mm GT100B pipe diameter: 70mm /2,76inch EC-approved: No Race system: No Valvesonic: No Part no.: SSXPO173