do the gas tank come with a flip in the tank to prevent gas spill incase of a roll over. If so will the flip stop opening will that stop the flow of gas from going in.
there is not a special "flap" in the tank. as long as the cap is on and the tank isn't damaged, there should not be an issue of a fuel leak. that being said, there is not a flap to keep fuel from going into the tank.