I took my brand new xr650 out for a ride before I uncorked it. To say the least, I was not impressed at all. In fact I was Pissed. I thought to myself " I gave up my CR500 for this?" I knew I would have to do the suspension so that was no big surprise, but I could not believe the lack of power this thing had. I kept thinking "I hope the guys at TT are right about how much power these bikes have after you uncork them". Well the advice I got was awesome. I bought a Bills slip on pipe, took off my smog crap, new air filter,manifold and jetting. This bike rips!!! With all the power, the suspension is not all that bad either because I can wheelie over stuff. ( It still needs to be done). I can't say enough about the bike.