This is a list of British manufacturer Birmingham Small Arms Company (BSA) motorcycles from the 1930s until the end of the marque in the 1970s. The list is tabulated by engine type and period.
The B-series were single cylinder models of 250 cc, 350 cc and 500 cc. After the Second World War only 350 cc and 500 cc overhead valve models were continued.
In the 1930s the M series was a mixture of overhead valve and side-valve models. During and after the Second World War only the side-valve models of this series were continued, typically for use by the armed forces or in sidecar combinations.
The C-series were 250 cc single-cylinder models & a 350 cc side-valve model for 1940 only
All Bantams were single cylinder two-stroke machines
All BSA parallel twins were pushrod operated overhead valve machines. The A7 and A10 models were semi-unit construction until about 1953 and pre-unit construction thereafter. All A50, A65 and A70 models were unit construction.
See Triumph Triples for corresponding Triumph models)