Mine came with the bike, previous owner had it installed. I take it off once in a while. Makes it easier to tow on my Kendon single trailer (too much weight on the back of the trailer so it gets funky over 55mph) pull the tour pack off & no problems. I think it was done at a dealer, but other than that I could not say if it was HD or aftermarket. CB & Radio antennas mounted at the bottom of the side bags. But I don't use the CB either.

Toby