not a 543 , but my 505 revs fast and will hit the rev limiter before I can hit second gear if I`ve got my head in my ***, or fighting the wheel.
I just raised the limiter to 6250 from 6000, guess the solid roller has something todo w/ that , and the raised port heads ---------
Think it will go well beyond that too , but thats a lot of weight to swing around for a poor boy like me , even if it is as smooth as a babies but , because of the excellent race balance by Hughs.
