Nov 16, 2001 · The M21 tested is a product of the immediate post-war motorcycling industry in that it shares the running gear of the war model WM20 despite being a claimed 1947 model.

Make Model: BSA M21: Year: 1937 - 61: Engine: Four stroke, single cylinder, side valve, Capacity: 591 cc / 36.1 in: Bore x Stroke. Up to 1938: 85 x 105 mm . After 1938: 82 x 112 mm

The BSA M20 is a British motorcycle formerly made by Birmingham Small Arms Company (BSA) at their factory in Small Heath, Birmingham. Although initially viewed as a near failure by the …

Jan 14, 2016 · The M21 from British manufacturer BSA sports an air-cooled, four-stroke, 591cc, single cylinder powerplant mated to a four-speed manual transmission that can reach a …

Aug 31, 2015 · An Edwardian motor bicycle with ‘modern’ features, one that doesn’t frighten the horses? The ideal, well-sorted winter classic bike? Must be Steve Wilson’s old BSA M21. He’s …

The AA used over 2000 of the M20, and later M21 models, and was the last purchaser of the M21 when production ended in 1961. The M21 combination was an unsophisticated but robust …

The 500cc BSA M20 with telescopic fork and rigid frame is a classy act with style at the back and comfort at the front. On the downside, it lacks the larger diameter front brake of the late BSA …

M20 / M21 / M33. De type specialist voor de modellen van de jaren ’30 is Aad Otte en Frans Hendriks. Kenmerken. De BSA M is een motorfiets met een eencilinder blok van 500 cc (M20) …

The BSA M21 was a larger capacity 591cc version of the M20 side valve motorcycle made between 1937 and 1963. Large number were used by the British army. It was also used, with a …

It is a half-size 600cc BSA M21 side valve engine dating from the 1930s - 60s. The motorcycle fitted with a sidecar became well-known as the vehicle used by the Automobile Association as …