Engine and Drivetrain Rzr 800 rear diff explosion question…lol August 30, 2015 I have fallen victim to the pinion nut backing off and grenading my rear diff…so i have a question for anyone who has also had this happen.. When you took it apart was the splined drive "shaft" from the trans damaged at all? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related