Is it a Zuma by chance? I've owned two, both of which were modded. 70cc kit, pipe, carb, varator, speed clutch. Scooters are the best! There were a bunch of us who had them a few years ago. Downtown Minneapolis the Police didn't bother us once. It's nice to go to an area where the law enforcement have better things to do than pick on kids with scooters.

The two most important things are the speed clutch, (an adjustable cintrifugal clutch and the varator) These things don't have much power and that is the key to keeping it in the powerband and using what little power you have all the time. Mine would get up to almost 60mph. The kid I sold mine too got 63mph out of it. But he was more abusive than I was, I don't like holding a 2-stroke WOT for as long as it would've taken to get it going that fast.