Description
1953 BSA 649CC A10 REGISTRATION NO. OHP 861 FRAME NO. BA7.S.10720 ENGINE NO. BA10 7802 A new '650' twin joined BSA's 500cc A7 model in 1949. The existing parallel-twin architecture was retained for the new A10, with 360-degree crankshaft and single camshaft at the rear of the cylinder block, as...