If you are looking to remove reverse on your Yamaha for less weight, this is the shaft that you need. It has the Yamaha spline on the clutch side, and then Arctic Cat non reverse style spline on the chaincase side. You would simply use Arctic Cat style upper sprocket. Our heavy duty jackshaft also allows you to put a C3 or other brands belt drive kit... If you are looking to remove reverse...
This PROLITE version is 2.5 lbs lighter than stock. It is threaded on the end instead of using a snap ring to hold the pulley on. But it can also be used as a direct lightweight replacement for the stock shaft. It does have the snap ring grove on it too for the stock snap ring retainer. The larger diameter tube is stronger than stock too. This PROLITE version is 2.5 lbs...