BSA Rocket 3/Triumph Trident adaptations only, available from the factory as part-numbered inventory. Williams' team won consecutive 750 cc production races at the Isle of Man TT for the five years between 1971 and 1975, and in the new F750 event for race-specification machines, Triumph and BSA machines with Rob North frames placed first and second. Bert Hopwood recommended a production version of the racing triple, producing at 8,250 rpm, but his suggestion was not adopted. Further racing development was done in Duarte, California under racing manager Dan Macias. Tom Mellor set four world speed records at the Bonneville Salt Flats in September 2008
Triumph Engineering for their latest motorbike. By the mid-1920s Triumph had become one of Britain's main motorcycle and car makers, with a plant capable of producing as many as 30,000 motorcycles and cars each year. Triumph also found its bicycles demanded overseas, and export sales became a primary source of the company's revenues, although for the United States, Triumph models were manufactured by licence. The company's first automotive success was the Super Seven model, which debuted in 1928. Soon after, the Super Eight model was developed. When the Great Depression began in 1929, Triumph sold its German subsidiary as a separate, independently