Outlaw Racing OR3079BU Chain Roller Guide 34x24mm Blue YZ125 YZ490 RM80 RM85 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 and include mounting hardware. SIZE: 34x24mm. This chain roller comes in BLUE.