Polaris wheel bearings are notoriously low on grease from the factory - now you can quickly and easily add grease to your wheel bearings with this handy tool Decrease wheel bearing temps while increasing longevity by periodically re-greasing your wheel bearings No need to remove the axles, this tool simply slides over the axle and into the hub for easy greasing Bearing greasers designed for Polaris. BEARING GREASER POL 40MM