Husqvarna’s fuel-injected 2-stroke Husqvarna’s TE250i is a fuel-injected two-stroke dirt bike, with an electric start, that could change the face of trail and enduro riding. (Charles Fleming ...

It's evident that 450cc four-stroke dirt bikes are faster than 250cc two-strokes. If the 450 wasn't faster, professional motocross and supercross riders would be racing 250cc two-strokes.