i have an o7wr250f and its not hard its just the stock bike is not going to do it well. if you only get one thing for that bike get the A.I.S. removal kit, huge difference(a.k.a. smog pump eliminator). if you get that kit you can do wheelies no problem. while your at it, look at your ignition at the back of the bike, theres only one grey wire, disconect that wire or cut it, what that does is let the bike free rev, the grey wire acts like a secondary rev limiter which is not needed. you can get that a.i.s. removal kit from yamaha.