[1][2] The Sinclair Zike is a portable bicycle with a small electric motor driving the rear wheel and with batteries built into its frame.

[4][5] The bicycle's maximum self-powered speed was limited to 15 miles per hour (mph) to avoid classification as a motorcycle under UK law.

[4] The Zike was launched on 5 March 1992 at the Cyclex exhibition in Olympia, London, when a prototype was demonstrated to both press and public.

[4] In May 1993 press reports stated that Tudor Webasto had terminated production because of low sales and that Sinclair was seeking a new manufacturer.

Susan Watts for The Independent called it "an impressive feat of miniaturisation" but stated that "a quick test ride suggested the Zike is too unstable and lacking in power to make a cyclist feel secure on the nightmarish roads of London.