TE300i’s can become street legal when you add certain things. The things you have to add come down to the state you belong in (potentially some states don’t allow you) but Florida can. Ours is street legal, soo definitely know it can be made street legal :) For Florida for instance, on any dirt bike you need to add headlight, brake light, license plate light, turn signals, mirrors, and replace the exhaust to meet emission standards, and it needs to have a horn.
