Simons Muffler Duo - 63,5mm - Herstellerliste - Produkt Hersteller SIMONS BOOST Products Decibel Insert 51mm Lowers the exhaust Volume Made of stainless steel for 51mm exhaust systems With the db Insert loud exhaust systems can be silenced. The Insert is to be thread in or welded in the tail pipe or hidden in a connection point of the exhaust system. Material: aluminized steel Length: 290mm Diameter: 48mm outside (largest spot)