Killer chopper seat that had been on a 1975 Yamaha XW650. I have a sissy bar as well that I am thinking I will list soon if you want the seat. Great stitching, in really good shape for the age and a high quality seat for that vintage chopper conversion. Multiple mounting inlets on the bottom so I'm thinking they made these so they could fit a variety of similar bikes whether a Honda CB750/CB550, Yamaha like this one, etc.
Base is approximately 27" long and 12" wide at it's widest.