Agree that stock are garbage. I get the concept of having a weak point to save you from greater damage........but they are ENTIRELY TOO WEAK! We have two 2017 Axys sleds at work. We are about to replace a third lower a-arm this season. We have taught the old rule of thumb that if a tree is smaller than your wrist....it is traction. Anything bigger can do damage. THAT NO LONGER IS THE CASE! The first one was bent BADLY when one of our guys tried to go over a tree no bigger than 2 1/2 inches in diameter. The next one was by another guy who said he had no idea he had hit something. He just noticed it was bent the next day. The latest one was be me today. it has been warmer the last few days and the snow has been a little crusty, but we rode a groomed road into the backcountry and then into deep snow. We have had a good snow year here in north west Montana. I had no wrecks, and didn't hit any rocks/stumps all day. When we got back to vehicles and had the sleds up on the trailers, I was explaining the issues we had with the a-arms being so flimsy to another guy. I looked down and saw that my lower right a-arm was bent! I have no idea how it could have happened but know it had to happen on todays ride. I never even felt so much as a jerk on the handlebars.
If you are going to design in a "weak point" to save from other damage, maybe it should be a less expensive sheer pin or something. Not a $250 part!!!