In the '50s, mechanics assembled their own custom bikes out of spare parts with go-kart engines and rode them around the pits at local races. This gave way to mass-produced models like the Taco Mini ...

It weighed only 175 lbs, and had a 2-stroke, air-cooled, single cylinder engine capable of 6.5 horsepower and 4.3 foot pound of torque. Not to be outdone by Suzuki, Yamaha also entered the dual-sport ...

Honda Motor says it will end production next year of its "Super Cub" mini motorcycles with an engine capacity of 50cc or less ...