I have a 17 Maverick X3 XDS with approx 3500 miles on the unit. On our last outing under hard acceleration I heard a loud pop. My first instinct was broken belt, but then realizing it was still moving under power I was like well what is it. The guy behind me yelled and said hey your right rear isn't pulling. I winched to a tree and lifted the right side enough to free spin the wheel to check the axle. The axle is solid from the hub to the trans but would spin freely still. So I figured it was broken in the trans. Loaded up and headed home. So I pulled it in the other day to tear down and replace the axle. Upon tearing it down I pulled the axle and it was complete. No breakage. It looks like IMO that the splines have stripped. Like I said the unit has 3500 miles on the original rear axles. Has anyone had this issue before. I am going to replace both rear axles tomorrow. I had already purchased 1 stock rear axle and ordered the other now. Hopefully it will be here tomorrow and I can install both. But my worry is the spool that is in the tranny. Just just reaching out to the group.