Yamaha intends for the PW50 and TT-R50E dirt bikes for the youngest riders. However, the Yamaha owner's manuals clearly warn parents of the dangers associated with riding motorcycles.

This little dirt bike is powered by a 50cc air-cooled, single-cylinder, four-stroke engine with a 39.0mm bore, a 41.4mm stroke, and a 10.0:1 compression ratio.

Yamaha backs its 50cc dirt bikes with a 90-day Limited Factory Warranty. The PW50 and TT-R50E come in the Team Yamaha Blue livery. 50cc Yamaha motorcycles from days gone by.