I have some Speedmaster covers I plan to put on my America as a winter project. From my checking, most of the Bonneville family clutch covers are interchangeable. Like noted above, the oil or breather pipe of the earlier models mean a like year swap would be needed. After that was changed there were some differences in either the gear selector rod or clutch actuator rods being different diameters on some models. I believe the cover had the same size hole but the seal/bearings had different inner diameters. Replacing the seal/bearing is a low dollar and easy job and I was planning on replacing them anyway.
Last edited by MattyMo; 11/08/2016 6:29 PM.