Porsche 911 991.1 3.8 (C2S / C4S) YOC: 2011 - 2015 Part: Rear Silencer(s) Info: For PSE Equipped Cars - Fits to OE Side Silencers and with OE Tips tailpipe design: pipe diameter: 70mm /2,76inch EC-approved: No Race system: No Valvesonic: No Part no.: SSXPO181