I got mine to 55mph. My clutch is really worn now also. They are pretty tough to work on.

 

Cool! I'm glad to see some other people had sore lower backs, too! Seriously, for its shortcomings, it was my "1st", so I have some fond memories of it. I'd really like to see another one someday. It's always cool seeing "vintage" quads out on the trail (and to see how far we've come). Like, remember when 250cc's was BIG?