This is axle/driver and bearing kit only Upgrade combo for the Ski-Doo Mini-Z. Kit comes with a new 4tooth driver set, 2 axle bearings & new drive shaft axle. Kit allows for smoother ride and better drive within the track windows instead of the non window oem track. Use this set up with Polaris track #5411751 NOTE: FOR 2002 &OLDER MODELS PLASTIC HYFAX WILL HAVE TO BE INSTALLED TO REPLACE METALSTRIPS ON SLIDE RAIL.
