Constructed of mandrel bent t-304 stainless steel the DC Sports Scion xB axle-back exhaust provides improved flow and performance. Dc Sports has utilized a 5-3/4" diameter round muffler in order to meet the 95 dB limit without sacrificing performance.4" tip with a DC logo provides a finished look to the vehicle. DC Sports utilizes the stock clamp/gasket for a factory-like fit and easy installation.