Got my slash cvd's today and put in the rears right away cuz that's what was broke. I didn't put the fronts in yet because I wanted to run a pack through before dark. Pretty straight forward install. No modificstions needed what so ever. I don't know if I'm the best person to durability test them. I'm only running 2s 19/54 on the stock vxl system but I did all the weelies I could and no sign of wear. Any questions I can try to answer the best I can if you guys want. I have a pic but no idea how to post pics here.