Say, what? The 250 is def. not made for low-speeds. It can handle any legal speed (including going over to the point of wreckless driving on the highway in most states) without a problem. If you’re callin’ it slow, then thems fightin’ words.
I don’t know what Kawi did when they messed with the 250 for 08, but if I remember correctly, it was a little tweak in gear ratios.
The bike revs high yes, but it should never be more than about 11K, which is about 3K short of redline. If you find yourself getting above 11K, then you should have already shifted up, because you’re getting outside the powerband as the engine speed goes past that.
Keep it between 8-10K while riding around and you’ll get all the power it can give you.