WSM Piston Kit 50-257-04K XD-4/VX-Pro3/VX-Pro4 Helmet Liner — M/L Silencer has a semi-direct internal

Silencer has a semi-direct internal structure and is fastened to the frame by carbon clamps The format of the silencer is tailored according to the specific engine model in order to boost the torque and the maximum power rating Laser etched LeoVince logo Includes a spark arrestor that meets U

Kits containing tapered bearings include shim selection

Fitment: Yamaha R1 2015-2017 - Also has a universal fitment and can be used on other bikes with slight modification

Self-adhesive or non-adhesive backing

WSM Piston Kit 50-257-04K XD-4/VX-Pro3/VX-Pro4 Helmet Liner — M/L Silencer has a semi-direct internalQuality and construction that meet or exceed OEM Feature improved E clip design Kits contain piston, rings, pin and clips Rings available separately