I think top speed isn't relevant, just 0-40. But one little story, I was being chased by a queer (I mean quad), and I got wfo in 5th. That was first of all way to fast, and second, I didn't see the rock on the trail that threw me into a wild unstable wheelie. Kinda scared everything out of me. One of my little xr100 friends tried to explain that his stock xr will do 80, and that my 125 will do 130.