I just got my King seat at a Valkyrie rally in Asheville this past week. Love it. However the King does raise you up about an inch. I was hoping to just use the stock backrest with his riser but we tried both and my wife was more comfortable with the Ultimate back rest. One small item that needs to be addressed is that the black screws holding the passenger backrest rusted as soon as they got wet. Worst case maybe I can get some black allen head screws and find some black covers for them.