someone probably replaced it with a polisport fender or something, I know you can buy aftermarket fenders that don't ahve the spot for a light.here shine take a look at the fender and tell me that is a KX fender
View attachment 8897
Here is a KX OEM fender, it doesnt' have any bolts on top
View attachment 8898
Here is a shot under the bike
View attachment 8899
Here is a OEM fender for a KDX, clearly there is a spot for a tail light but not on the one I have
View attachment 8900
Oh, and you're welcome for this sage advice.
I'm gonna assume you posted this before you saw my post
Better luck next time, Magic Mike.

