Description: This is my all time favorite International Six Day Trials (ISDT) machine, the 1948 Royal Enfield Bullet. This is the beginning of the Bullet as we know it.
An article from Sump's August 2010 Classic Bike News: "In 1948, with the hostilities over, the Bullet concept took on fresh impetus when a prototype single cylinder 346cc machine arrived on the scene. The two most significant features of the new 1948 bike were Enfield’s own brand of telescopic fork (two-way damped) and, more controversially, Enfield's own brand of swinging arm frame. Over the next few years, the 350cc Bullet underwent various revisions, notably to the lubrication system, and in 1953, the 499 cc (500) JS Bullet arrived. Its stroke was the same as the 350cc G2 Bullet at 90mm, but its bore was larger at 84mm (as opposed to 70mm). Almost identical to its smaller brother, the 500cc Bullet featured revised front fork legs with spindle lugs reworked for increased trail, thereby more suited to sidecar use. The 500 had in fact been available in 1952, but for export markets only. In 1955, dual seats, that had been optional since 1952, were standard fitment. The compression ratio on the 350cc Bullet was raised to 7.5:1 with a corresponding increase in horsepower (up from 18bhp to 19.5bhp—20bhp according to some accounts). The camshafts were also reworked for quieter operation. Frames were modified, most visibly around the shock absorber/damper units top mounts. Both bikes were given full width brake hubs. And the 350cc Bullet gained a new (ported) cylinder head with a larger inlet valve. Also, the exhaust header pipe was revised and was now a push fit instead of a push-over-stub arrangement. In 1955 the Bullet began production in India.