I have an 01 yz 426 completely stock. It had about 15 hrs on it when I purchased it last year. A guy I know purchased it new as his first bike. He Crashed bad on his second day of riding and never rode it again. The bike was layed down and had some minor scratches on the right side cover and radiator shrod. Is it possible it has a 4 speed and how can I tell? Also, can I just continue to ride it as a 4 speed? I've trail ridden it for over a year and have never had any problems. It will not shift into 5th and never has. The bike acts like a 4 speed. I haven't noticed any metal shavings in the oil when changing it. It does seem a bit slow in the top end department. I just realized it is supposed to have a 5 speed after checking the manual on line.