On the 2016 FLSTC, the rider seat and the passenger pillion are separate pieces. The rider seat screws down in the back and the passenger pillion "slips under" those screws at the front. What is the part number for those screw caps? Mine are chrome, but they are ... pretty washed up, corroded even. Would like to replace them with new, black versions perhaps.

I've spent the time to implement the detachable sissy bar and luggage rack setup (which also allows me to remove the armrest connected to the sissy bar I installed for the wife...see pics on my post here, with Texas flag). (Or, duh, in my signature image.) Takes a lot of weight off the back and more importantly allows me to swing my leg over to get on and off the bike! After replacing those screw caps, I'm thinking about removing the passenger pillion during the week (like I'm doing with the passenger backrest, sissy bar and luggage rack with the detachable setup) and replacing it with a fender bib for a much more streamlined look.

Any help would be appreciated. I'd look it up myself, but HD parts can be oddly specific and there are weird names like "knurled", no idea if that applies.

 

Looks like HD calls it the Seat Mounting Nut, part number 3633. I'm not sure if they make black or chrome. On mine they're just plain old metal.

A quick search for that part number pulled up a few options, like This

 

Thanks, Jeff!

 

I would call the dealer parts department, My Dealer(Jerry) has always helped me out.