Yeah mine does seem pretty high
![Undecided :-\](https://www.kymcoforum.com/Smileys/default/undecided.gif)
I've got an old Baotian engine (think its pretty much the same) will check the gears on my Kymco against the old Baotian ones to see if they'll fit.
Only ones i can see to buy are a 10% Gear up kit but are only recommend for 125cc's
EDIT:
Just an after thought, what size wheels does your bike have?
Mine has 14" which may affect gear ratios etc