Millions!! as a matter of fact we have enough so don't go buy a bike because there is no room for you in our would.
who was the first dirt bike rider
any body that can ride a dirt bike safly and good
Dirt Rider magazine said that the dirt bike of the year was, KTM 350 SX-F
to start of with a50cc
James Stewart
yes
Nope
not very fast
because he loved dirt bikes and he wanted to be in the x games
Travis Pastrana i think is the best dirt bike rider he was the youngest rider ever to compete and win the motocross de nations (pretty much Olympics of MX) he was also the youngest rider to win a freestyle MX contest and won 5 or 6 contests running
yes
There's really no telling. Depends on how tuned the engine is, if the bike is styled like a road bike or a dirt bike, if it's geared for acceleration or top speed, and on how aerodynamic bike + rider can become.