This model achieved quite a reputation in racing circles, and was campaigned by factory riders and privateers in the grueling Milano-Taranto and the Motogiri. It was known by several names but there were basically only two versions, one with 18mm Dellortos and the other sporting 22mm throats. In 1955 the cast iron barrels were replaced with K.S. alloy cylinders from the German Kolbenschmidt firm.
