WSM Piston Assembly - Yamaha - +.25 mm 010-872-04K Reblaze T-Shirt Keeps mud from packing next

Keeps mud from packing next to foot pegs

Not for use with stock muffler

Graves Cat Elim 86 DBA @ idle 98 @ 5000 (with included sound insert - can be removed)

Includes every seal in an engine including crank shaft seals

WSM Piston Assembly - Yamaha - +.25 mm 010-872-04K Reblaze T-Shirt Keeps mud from packing nextQuality 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