I was really impressed the way it ran in stock form.I rode it for the first time at my local track and goin really fast on it ,not what I was expecting at all.Passed a lot of guys on reg. 450's.Bike has good power but the throttle stop is annoying. That bike is very capable in stock form however it does not like big jumps.I bottomed really bad on this 70' table but all the other stuff doubles and rhy. sec. some step up stuff it worked really good.I like the fact it is so quiet and it is elec. start.Probably should not have ridden it that for break in 2- 30 min. motos but it's a yamaha it will be ok.Very cool bike..