BSA M 21 No rating yet. 4 BSA M 21 model variants.

BSA M 21 model overview

BSA M 21 models include the 4 motorcycles below produced from 1953 to 1956. The 1956 BSA M 21 motorcycle is used as an example on this page. It has a 591 ccm single cylinder engine. The category is allround.

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Engine and transmission
Displacement	591.0 ccm (36.06 cubic inches)
Power	15.0 HP (10.9 kW) @ 4000 RPM