yzf motors?

I currently have a 250r with a yzf400 motor in it. I need to know what upgrades that I can do to get more power and is there a lot of difference in hp betwwen the 400,426, and 450? Would it be worth the $ to upgrade?

stock 400 = 40hp, stock 426 = 44hp, stock 450 = 48hp :cry:

Are these #'s rwhp? Are hotcams worth the $ for a 400?

Yes these are rear wheel numbers and Hotcams are a great hopup :cry:

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