II

After that i removed classic air filter and put performance filter, more air more power and torque.

Classic air filter

Performance air filter

That is not all you must do if you want to tune your pocket , however you must setup carburetor. There is one screw on left side (if filter is towards you), that screw determine how many air is getting in side clynder. Turn that screw until yore pocket bike starts to go on his own, reduce it just a little bit until it rear wheel stops.

Set up screw