RZR XP 900 Rear diff leak November 22, 2015 Just bought a 2011 Rzr xp900. Dropped the skid plate and the rear diff looks like it’s been getting wet from maybe the sea behind where the driveshaft connects see attached pics. Anything to be concerned about? Or just check fluid level? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related