Scalvini Two-Stroke Factory Silencers are specially tuned to work in conjunction with Scalvini Works Pipes for optimum performance. Treat yourself to the trickest two-stroke race silencer on the planet. Slip-fit inlet tube. Aluminum body with carbon look nylon / plastic composite endcap, lightweight and durable. Can be repacked. Can also be used with O.E.M. or aftermarket exhausts.