I have a 17 RZR 4 900 I am still getting some vibration from prop shaft while in 4 wd I replaced the carrier bearing with Sand Craft replaced all 3 u joints Im guessing the only other part is the prop shaft. I have GDP 4 portals with 30 % gear reduction I'm wanting to use the SATV bounty series. Anyone have any idea if it could be a different problem an is anyone running the SATV prop shaft have any issues so far I've haven't had any problems with any parts I've used from SATV