Imagine speeding through a construction site at 80 miles per hour. Not knowing what terrain is coming up next. You could speed away and be OK or you could crash and burn. That's the adrenaline rush you get when you ride a dirtbike. Dirtbiking is an exciting, adrenaline pumping sport. Dirtbiking is also a sport enjoyed by many people all over the world. To get involved in dirtbiking you have to race in the right age group. You also have to know what size dirtbike is right for you. Next, you need to know what kind of race you want to participate ....