Bought the fender and light for my 94 XR650L. It fit well. Wiring colors were a little backwards, but with a little poking with the multi-meter, i was able to sort it out with ease. I love the kit! It looks WAY better than the television set Honda calls a brakelight on my XR650L.
fitment was good, and all the mounting holes lined up, color is very close, looks like a factory fender. would for sure get another if fender gets damaged. lens was a little on the cheesey side, but the factory lens works with different screws.
This would be the MX style rear fender with a tail/stop light below the fender like shown in the image. The Acerbis Rear fender for your WR450F would be an OEM replica with the taillight on top of the fender.
Dont base your order off the pictures. We use general product images supplied by the manufacture so the one that's pictured isn't necessarily the one you will receive. It will be the same thing, just specific to your model, so as long as you profile your bike correctly you will get the correct finder.
I guess that could be done. I would think the fender would be a little shorter than a typical MX rear fender, if you were to remove the tail light assembly. They typically cut the rear fender shorter to not make the fender huge when the tail light is attached.