AA (1937-61)
The AA (M20 & M21) was a motorcycle model produced from 1937 to 1961 with a four-stroke, single cylinder, side valve engine with a capacity of 591cc. In earlier models,
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The AA (M20 & M21) was a motorcycle model produced from 1937 to 1961 with a four-stroke, single cylinder, side valve engine with a capacity of 591cc. In earlier models,
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