I think the ones off of 900 would be worse than the stock ones due to weight....I had a 15 high lifter and tried stock four seater tenders and they lasted about 4 rides and they were collapsed. then i bought 2 sets from RZRaid and that thing rode and hooked up like a dream....I just got a 17 high lifter and installed the same springs but had to remove the front ones due to being in a bind, as soon as the front spring sag some I will add the tender springs to front...contact Dustin Robbins at RZRaid.com ...I think he has a cure for the 4 seaters also....