The Honda ZB50R is a small 50cc motorcycle produced by Honda Motorcycles belonging to its Z Series family of mini bikes. The ZB50 was very similar to the Monkey-RT which was marketed in Europe and Japan in 1987 and 1988.
The ZB50 was only available in 1988 in the United States. Only 3058 were produced for the US market and the bike proved too expensive to mass produce. The ZB50 was offered as a street & trail alternative to the Z50R, which was being geared more towards dirt track riders. It is characterized by a perimeter spar frame, giving it the appearance of a miniature sportbike.
The ZB50 is a 50-state street legal motorcycle. It is powered by a 4-stroke 49cc overhead cam engine with a 3-speed semi-automatic gearbox. The engine is very similar to a Z50 engine but for the addition of a roller bearing cam. The electrical system is 12 volt and the ignition is an electronic CDI.
In stock form the ZB50 has a top speed of approximately 35mph, but with a craze following behind them parts are available to ultimately double the speed. Stopping power is provided by simple lever-actuated drum brakes front and rear.