According to Bobby, the hub is now the "fuse"
http://www.pirate4x4.com/forum/showthread.php?t=372780IMHO, I would rather change a hub than a birf. That is why I went with his Cromo R/P 5.29's and his Super Axles. Sure it's more money, short term, less down time if I bust a hub on the Trail, long term.