WSM Piston Kit - Yamaha 350 - +1 mm 50-540-07K 520 M3 Chain Stretch elbow accordion helps movement

Stretch elbow accordion helps movement and comfort on the bike

Removable inner mesh liner

pins and seals needed for repair

High-quality polished cast aluminum construction

Mounts to handlebars with bar inserts

WSM Piston Kit - Yamaha 350 - +1 mm 50-540-07K 520 M3 Chain Stretch elbow accordion helps movementQuality and construction that meets or exceeds OEM Feature improved E clip design Contain piston, rings, pin and clips Additional rings available separately Order one per cylinder Skirts have a nonabrasive, expansion retarding MOS2 coating to reduce heat and friction for added power and longevity MOS2 coating actually draws heat through piston walls and out the bottom Specially hardened tops add strength to ring grooves