I made this simple backrest using a piece of 4 x 4 x 3/16 angle, a piece of 3/16 x 1" steel strap tapped for two 5/16 bolts, and a 1/2" pipe. Took the headrest off my Dodge Ram pickup and turned it around backwards. The whole thing slides forward or backwards and the backrest can be raised or lowered. If you can weld, cut, and tap steel you will have less than $20 in it. My wife loves it. Of course it will work on any bike with a luggage rack. You will not have to drill your luggage rack or change anything on it. It can be installed with the (2) 5/16 bolts in less than 1 minute. Of course you put the headrest back on your car or truck when not needed on the bike.