never bothered with it much, & when i had one on a 250 it didn't seem to matter,but i think on a lightweight going very fast it might be helpful. does a hayabusa have one? ;D if so then maybe it does help. good skins, perfect alignment and geometry keep a bike straight along with the gyroscopic action of the wheels, so I am not too sure about a stabilzr unless you worry about hitting soemthing. not really sure, anybody?