It's called a rear Passenger Grab Rail. Replaces stock sissy bar for solo riders This is what I have: https://www.directlineparts.com/product.asp?pid=1262&str=2&ID=538552023
"rear passenger grab rail" for when you are solo? where does the rear passenger sit when the bike only has a SOLO seat? Maybe its just me, but grab rails are on the side, I thought he was talking about the SOLO BAR, but I could be wrong