Your hub/spindle is equipped with tie down engineering's vortex lubrication system. while the vortex lubrication system is designed not to be touched, there could be a time where it will be necessary to change or add new grease. the bearings can be lubricated without removing the hubs from the axle. the advantage to this system is that new grease saturates the inner bearing and outer bearing while pushing out the existing grease, unlike systems that just push new grease on top of old grease. this insures that the hub cavity is completely filled with new grease, if ever required. 100,000 mile or 6 year limited warranty*. "no touch" lubrication system. no maintenance/service for lower operating costs. no need for periodic re-greasing or inspection. reusable dust cap is threaded for easy removal should the need occur.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov