WSM Piston Kit - Yamaha 660 - Standard 50-544K Aircharger® Intake System It requires you use both

It requires you use both the front and rear docking hardware (two separate items that are not included and must be purchased separately)

Anti-scratch visor

CNC machined ball joint block

We suggest using this kit along with the Graves suspension shims to maintain your suspension setup

Once this is capped off the air injection system can be safely removed

WSM Piston Kit - Yamaha 660 - Standard 50-544K Aircharger® Intake System It requires you use bothQuality 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