UFO Universal Enduro Fender With Light Rear White

With a bit of work, you could certainly get this rear fender to fit your WR450F, however, you could just go with the UFO Enduro Rear Fender with LED Light as it's a model-specific part. You won't need to cut or drill anything since it bolts straight up to the original WR450F subframe. For your needs, we highly recommend the bolt-on UFO Enduro Rear Fender with LED Light instead of this universal part.