1Motorcycle DB killer silencer is suitable for motorcycle exhaust pipe with 48mm muffler 2Made of high-grade stainless steel with high temperature resistance, rust resistance 3The muffler at the end of the exhaust pipe can clearly hear the whistle of the vehicle during riding 4Exhaust pipe muffler works for you to drive safely and reduce noise pollution 5The product is useful and practical, sturdy and durable for a long service life1 x Silence Valve1 x WrenchItem Type: Exhaust Pipe Silencer_x000D_Applicable Models: Motorcycle exhaust pipe installation hole diameter universal for approx. 48mm / 1.9in_x000D_Exhaust Surface Size: Approx. 45mm / 1.8in_x000D_Size: Approx. 44mm / 1.7in_x000D_47mm / 1.9in_x000D_67mm / 2.6in_x000D_10mm / 0.4in 1Motorcycle DB killer silencer is suitable for motorcycle exhaust pipe with 48mm muffler 2Made of high-grade stainless steel with high temperature resistance, rust resistance 3The muffler at the end of the exhaust pipe can clearly hear the whistle of the vehicle during riding 4Exhaust pipe muffler works for you to drive safely and reduce noise pollution 5The product is useful and practical, sturdy and durable for a long service life1 x Silence Valve1 x Wrench