Rockers are members or followers of a biker subculture that originated in the United Kingdom during the late 1950s and was popular in the 1960s. It was mainly centred on motorcycles and rock 'n' roll music. By 1965, the term greaser had also been introduced to Great Britain and, since then, the terms greaser and rocker have become synonymous within the British Isles, although used differently in North America and elsewhere. Rockers were also derisively known as Coffee Bar Cowboys. Their Japanese counterpart was called the Kaminari-Zoku.

A café racer is a genre of sport motorcycles that originated among British motorcycle enthusiasts of the early 1960s in London. Café racers were standard production bikes that were modified by their owners and optimized for speed and handling for quick rides over short distances. Café racers have since become popular around the world, and some manufacturers produce factory-made models that are available in the showrooms.