A single-cylinder engine, sometimes called a thumper, is a piston engine with one cylinder. This engine is often used for motorcycles, motor scooters, motorized bicycles, go-karts, all-terrain vehicle

The MB50 is an air-cooled, two-stroke, single-cylinder Honda motorcycle, produced from 1979 into the late 1980s. The MB was the road oriented version of the Honda MT50. Sales ended in 1981 in the UK a