Outlaw Racing OR3083BK Chain Roller Guide 28x24mm Black KX100 KX85 RM100 RM65 Part fits both Upper AND Lower or varying models, please contact us for assistance finding the correct bearing. Designed as a direct replacement for the OEM design. Where Applicable rollers feature an outer mechanical seal to protect the bearings from dirt and water. SIZE: 28x24mm. This chain roller comes in BLACK.