If the 2021 YZ250 is Yamaha’s entry into professional national motocross, the YZ250F is designed to jump another class up into lower level supercross and pro 4-stroke motocross. Powered by a 250cc ...

All five models are powered by four-stroke, air-cooled, single-cylinder, carbureted engines. The numbers tell you how powerful each engine is: the 85's engine displaces 84 ccs, the 125 displaces ...