I had a Fatboy front fender on my 03 Road King. I want to do the same on my 16 Road King. HD sells a fender adapter for up to 2013. Parts book says it won't work with lowers. I plan to install lowers on my 16 this winter. Anyone put a Fatboy fender on a Rushmore Road King with lowers ?

 

For me it was a lot easier to get a matching SG or SGS fender to clean up the front end.

 

I had a FB fender on my 04 and wanted to put lowers - Warned Not to. Reason is - If the wheel is turned just right - could make contact with lowers??? Not sure about the Rushmore - I would assume, same issue,,, I have the 15 Batwing and I am ok with the front fender now... the FB did look nice on the 04 but I have moved on...
Good luck, check it all out before you buy all the needed parts