Main Jet 105

Upgrading your 150cc carburetor to a 105 size jet is perhaps the quickest and cheapest way to get a performance boost if your currently main jet is smaller than 105.  Unlike a 110 size jet, a 105 typically does not require any additional modification such as air filter or exhaust.  

Fit all 125-150cc GY6 4 stroke motors.  For racing applications or off road use only.