I bought a buggy a couple of years ago from a guy in Knoxville that rode at windrock alot & he had bout 10 broke 16 spline chromos on his workbench. He had a ls1 powered 4wheel steered juggy on rocks. He said he snapped em all the time so he went to 2 in. & didn't have anymore problems. He may have been extremely hard on **** but it made me wonder how much stronger they were than oem ones?