The Spanish OSSA 125 sidecar from 1960. Ossa was a Spanish motorcycle manufacturer which was active from 1924 to 1982 and from 2010 to 2015. Founded by Manuel Giró, an industrialist from Barcelona (Catalonia), Ossa was best known for lightweight, two-stroke-engined bikes used in observed trials, motocross and enduro. The company was known originally as Orpheo Sincronic Sociedad Anónima (O.S.S.A.) and was later renamed Maquinaria Cinematográfica, S.A..