Me and my friends were seein who could do the longest wheelie today. I was goin down the road and had rode one for around 1/8 mile and was goin about 55 mph when it came back to far and my back bar is broke so i jumped off cause i thought the four wheeler would flip on back. Well since I ain't able to run that fast I kinda hit the road pretty hard and slid 15 ft. I got road rash on my left knee, right palm and right shoulder. Also got a little bit on my right hip and right hand. Some how my head never hit the road. When I got done slidin I looked up and saw my four wheeler headin for the ditch and hit it and flip but I didn't care I just walked off and cleaned myself up. After my adrenaline went down I got to hurtin really bad so I went to the hospital and got some x-rays on my knee and nothin is broke but they said it could be cracked or my tibia plateau could be dented, that if it don't get better in a week to get a cat scan done. It ripped through my shirt and undershirt and ripped my pants. Four wheeler didn't even get hurt.