Originally Posted by maniac57
Smaller sprocket and a tuned pipe are the first mods you should consider.
Be aware the stock engines are not meant to run 40mph regularly and will be less reliable if run all out.
I get about 30-35 mph without any trouble and I have done these mods.
I have to admit I haven't even looked in to what "break-in" requirements are.
I imagine a tuned pipe is an aftermarket pipe that delivers higher power and speed?
I'll run a search on that.