How do you increase speed and performance of a 49cc motor scooter other than removing the restrictor?

Answer 1

Google (performance parts for 49cc engine)

Answerturning in the mixture screw will cause a lean burning condition that can severely damage your engine!

if your scooter has a restrictor washer on the variator you can remove it to gain a higher gear and gain some speed, some scooters have a restrictor on the exhaust which can be replaced with a new gasket.

also the CDI has a rev limiter, you can get a performance CDI that will not have the limiter which will give you more power.

you can install a performance variator and get lighter roller weights but going too light will cause major loss of top end speed and too heavy will give you poor acceleration.

a light weight rider can go with 7 or 7.5, a heavy rider would do better with 6 gram roller weights.

installing a big bore kit will require changing the carb jets and using a performance air filter and exhaust otherwise you will not see much of a difference, check your local laws, some states make you get a motorcycle license and register anything over 49CC.