but a engine in it
the brake
An improved flow of air and fuel mix will make the scooter faster. You can do this with an aftermarket exhaust.
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Go downhill
Loosen the headset a bit.
Yes it will make the scooter go faster, but you could run the chance of blowing parts in the moter if you do so
Really nothing get a 150cc
lose some weight
push it off a cliff
get a gas powered one
Unlock the gas on the handlebars