I don't know, it looks to be about the same length as the stock occ rear fender. by the time you get that fender mounted to the frame, it will end up only covering 1/2 of the exposed rear tire just like the stock one.
it sounded like you were looking for a fender to cover 3/4 of the rear tire, which to me, means that you would need a fender that is roughly 1/2 the diameter of the tire.
figure in how the fender mounts to the frame (covering roughly 1/4 of the tire) and then the length needed to get it to cover the tire outside of the frame (roughly 1/2 of the tire)