Because for Stewart, the dirt bike might as well be a fifth limb ... so he could spend as much time racing as possible. Monte Isom James Stewart, Jr. For a while, both his parents worked at ...

The younger brother of two-time 450SX champion James Stewart, who is arguably the fastest man ever to ride a dirt bike, is now in the history books as a 450 premier-class Supercross winner!

A motocross force of nature, James ‘Bubba’ Stewart has left a lasting imprint on the sport, not only for his sheer dominance, being one of only two riders in history to win perfect ...

Currently, Kawasaki KX dirt bikes ... a good dirt bike with several American Motorcyclist Association (AMA) motocross and ...