2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 372Get this manual
FRONT WHEELSUSPENSIONSTEERING Remove the snap ring
Drive the steering shaft bearing out of the frame using the special toolsTOOLS: Driver Attachment, 32 35 mm 07749-0010000 07746-0010100
Drive new bearing squarely into the frame with the marks facing up until it is fully seatedTOOLS: Driver Attachment, 37 40 mm Pilot, 17 mm