Aermacchi was the motorcycle arm of the Italian aircraft maker Aeronautica Macchi in Varese, which began building bikes in 1950. It built the Chimera, the Ala Verde and Ala d Oro four-stroke singles and, after 1960, Harley-Davidson badged lightweights and two-stroke racers that won many races in the 1970s. The brand later became Cagiva.
