on the eton rascal 40 2 stroke, can u go with a bigger top end? 50 or 70cc? and is it possible to just buy rings, or just piston and rings? i can only find kits that include the jug and everything?

i'd rather go alittle bigger if i can....if u can do that, can u post some links to the bigger kits that will work, and links to the piston kits only? thanks!

 

I'm quite sure that a 50/70 is not an option.
Try Hetrick Racing for the piston.They usually can get anything.