Had my rear sets powder coated flat black and when I got everything back I noticed the bushings looked like they had been coated. My friend told me there was no way because he had plugged each side. They seem to be some sort of plastic impregnated bronze. Now I have to try and locate some new bushings or ream them out to fit. Just thought I'd give everyone a heads up. Might want to remove them before they go into the oven. I'll post some pics after I get them back on the bike.