the axle has not been put to use yet. im going to say that if it gets hit enough more than likely it will, atleast a little bit. usually most axles do when you keep smashing the cover. i just really liked how my friend did it cause its not over kill and i dont see a rock hanging you up that bad anymore with the bottom smooth like that.Has there been any gear oil leakage issues with this thirteen bolt set up? Very clean.