SuperATV Polaris RZR XP Turbo Heavy-Duty Carrier BearingA Smarter Carrier Bearing Are you starting to hear a disturbing rumble or feel troubling vibrations when youre rolling down an otherwise smooth trail? Its probably time to replace your worn out OEM carrier bearing. SuperATVs Heavy Duty Carrier Bearing for the Polaris RZR XP Turbo features a self aligning bearing that is greasable and fully sealed, and uses a two piece design. It's engineered to give you a long lasting and smooth ride mile after mile.