They sent me the install instructions, so I could see where it attached. I am considering the rack with the foldable bracket. I might be able to attach a removable backrest to that rack. Not sure I like the idea of installing a rack, but it does use up that bare space (the diving board). I would need to see it first hand. They mention how they use a plastic cover over the rack, to improve the appearance. NO plastic is an improvement to me. I noticed it bolts to 4 points. The frame bolt to the side and below the seat (where you would attach the attachment points for the large rear BMW bag), and then replaces 2 bolts under the rear seat. One item that concerns me, is a kinda thick washer that fits between the seat, and the seat base, right where we screw the pillion seat.