I just went to go get my bike inspected because I received a notice and order for the fender eliminator that was on it when I bought it.
Anyway, The cop that inspected my bike was really cool and he gave me the skinny on fender eliminators.
Under the motor vehicle act it states that your motorcycle signals have to be visible from 20 meters away at a 45 degree angle. You also have to be able to tell which signal is on. SO if it meets those criteria and your license plate is not obstructed then you can use any fender eliminator you want.