Originally Posted by MotorBicycleRacing
Welcome to the forum.
I assume you have a China girl of some kind?
There are a few stock carbs so which one do you have? What don't you like about it?
Have many more questions than answers seeing who knows what your build is?
Posting a pic would help.
Do you tackle hills where you ride and how are you proportioned?
Changing the rear sprocket is an easy and effective way to speed.
How fast are you going now?
if china girl means cheep china kit i bought off ebay then yes i have one of those