The short OEM backrest can only handle a seat that the passenger portion is no wider than 9" as long as it does not travel any further back than the stock seat. I am almost positive that the predator seat is very narrow, if it is the profile series. If so you will have absolutely no problem.Thinking about buying the Parts Unlimited predator 2-up seat. I was wondering if any one knows if it fits with the short OEM backrest? Any opinions on the seat itself would be appreciated.