Thought it couldn't happen to me, but it did. First run out with RCV axles, ARB locked D30 and 35's. Wheeled the entire day and we were on the last trail. Running Pennsyltucky at Gore (Big Dogs Main Jambo) which is an 11 out of 12 rating I believe. Made it through the entire trail with only a few small hang-ups until the last big climb at the end. Tried to climb a rock just like I had been doing the entire trail and "pop-pop-pop-pop-pop!" I was able to drive it off the trail with some bad noises and pulled everything apart when we got back to camp. Everyone though it was the RCV that broke, but no dice. Pinion was all messed up too. I was able to pull the ring gear out and drive it 2 hours home with no issues. Gonna try a cryo treated R&P before I upgrade to a bigger axle.