Description
C.1950 BSA 499CC B33 REGISTRATION NO. OSU 203 FRAME NO. ZB31 12954 ENGINE NO. ZB33 12887 A development of the 350cc B31, the 500cc B33 was manufactured from 1947 to 1960. BSA's rugged, workaday B31 was a new introduction for 1945, its overhead-valve engine providing the basis for the renowned...