There are a few dirt bikes that you can buy that are cheap. Some generic dirt bikes you can buy are 200 CC, Yamaha and you can have bikes shipped to you from China.
Brand wise, it is KTM. The make a wide varity of dirt bikes in both two and four strokes. They have everything from kid's bikes to enduro bikes to MX bike. They are by far the best.
husqvarna
yes, dirt bikes are motorized
dirt bikes
Everybody that races dirt bikes "started" racing dirt bikes at some point.
Here is a site you can find parts you need for your wildfire Dirt bikes ATVs & Scooterswww.wildfiremotors.com/index.php?option=com_content&task=view&id=24&Itemid=67
dirt bikes in the past had less gears and power then dirt bikes have today
The two main types of dirt bikes are motocross and trail bikes. Yamaha, Kawasaki, and Honda all make these types of dirt bikes.
no dirt bikes arn't illegal
no there not dirt bike is better
dirt-biking is for dirt-bikes it can be either stunt or mud riding