We rounded up eight of the hottest 250cc four-stroke motocrossers and headed to Fox Raceway to see which one is the best.

Yamaha points to "the push for more environmentally friendly machines" as the impetus for 4-stroke dirt bikes -- which sounds ...

For many motorcycle enthusiasts, working and riding on two-stroke bikes capture the essence of ... A two-stroke engine is fueled by a mixture of gas and oil and has no camshaft or valves.