The Royal Enfield Bullet first appeared in the lineup of the company when the 1933 models were announced in September 1932. There were actually three Bullets, all with overhead sloped valve engines, in 250, 350 and 500cc. The larger machine had four valves. All had a raised exhaust. The Bullet name derived from the fact that the 500cc with very little tuning, stock parts and a raising of the final gear, was capable of almost reaching 100mph. Jack Booker ran a quarter mile in 9.1s timed by Motor Cycling, an equivalent speed of 98.9mph.