check a honda parts fiche... make sure that the part numbers are the same for different years... When i did this, I realized that the 1976 CB750F front hub is the same hub used for ALOT of the other CB models... CB500, CB550, CB400, CB750K, etc... just find the part number for your hub and do a search for that part number in the parts fiche. When you do the search in the parts fiche, it should come up with all of the years and models that that part number was used on.