There are nine (well, 10, if you split up Yamaha’s YZ250F and its Monster Energy Yamaha Racing Edition version) 250cc four-stroke motocross bikes available on the market for 2023. Most of these ...

which helps its fuel-injected liquid-cooled DOHC four-stroke 250cc single-cylinder engine pump out 40.6 hp and 19.5 lb.-ft. of torque on our in-house Dynojet 250i rear-wheel dynamometer.