Zero FX vs YZ450F

Just to give everyone else and idea how fast the Zero FX bikes are in got a friend of mine to help me make this video. Both bikes are mine and they have had no performance modifications. I weigh about 20lbs heavier than my friend. The first two races I was on the FX. The next two weeks swapped. With the weight advantage to the YZ, a good start would have gave a close race. With weight advantage to the FX, the FX would pull away.