I have a 04 F250 4X4 dieselrunning on 40's and I recently had a front locker installed and since then I've broken two axles, both on the driver side. The first time it broke at the U-joint, and I just broke it at the tip, where it meets the locking hub. I wasn't jumping my truck or being overly abusive. Has anyone else had this prob? I'm looking for some heavy duty chromoly/hardened axles. Anyone know where I can get a good set?

 

Try www.shaftmasters.com They're in south eastern Michigan.