Husqvarna competed in Grand Prix road racing in the 350cc and 500cc classes during the 1930s and was Sweden's largest motorcycle manufacturer by 1939. All of the racing bikes were based on a 50-degree V-twin prototype built by Folke Mannerstedt in 1931. The company team beat the Norton works team at the Swedish GP in 1931 with a 1–2 finish by Ragnar Sundqvist and Gunnar Kalen. This and the next year's success led to a full commitment to the GP tracks with Stanley Woods and Ernie Nott joining the Husqvarna riding team. That year, Nott finished third in the 350cc Junior TT and Woods ran out of gas eight miles before the finish of the Senior TT. In 1935 the company withdrew racing support, but new bikes were still produced and raced privately, while the company focused on producing a new two-stroke, two-speed commuter bike. That year, Woods won the Swedish GP (marking the fourth year in a row that a "Husky" had won) on a 500cc Husqvarna motorcycle that weighted 279 pounds (127 kilograms).