By 1955 Surtees had emerged as Duke’s fiercest competitor, beating the then-five-time World Champion at both Silverstone and Brands Hatch that year. Surtees was also a factory Norton rider by that time, though he switched to MV Agusta for the 1956 Grand Prix season (continuing to race his beloved Norton Manxes in British events). That year, riding Count Agusta’s screaming 500 Quattro “fire engine,” Surtees won his first 500cc motorcycle World Championship, taking the checkered flag first in three of six events. Surtees finished third overall in the 1957 season, his MV outpaced by much-faster Gileras, but he returned with a vengeance in 1958—aided by the fact that Gilera and Moto Guzzi had both withdrawn from Grand Prix racing that year—winning both the 350cc and 500cc World Championships, and repeating that feat again in 1959 and 1960. Surtees’ performance during this period can only be described as dominant—he won 32 of 39 Grand Prix between 1958-60, and also became the first man to win the Isle of Man’s Senior TT three years consecutively.