I bought a Gibson Dual Exhaust back in April and the other day I noticed one of my pipes was hanging lower than the other, took a peek under the truck to find that one of the hangers had broken already. Went out today and got 2 new ones to replace the broken one and the other one before it breaks!
The new ones were a little long so i had to chop them down a bit so they would fit and sprayed some undercoating on the raw end to keep it from rusting up, now that i think back i should have sprayed the whole hanger.

 

Eh...it happens. I broke 6 rear tailpipe hangers with one of my setups....til i got tired of redoing it then cut the tailpipe off. lol.

 

I've had my Gibson extreme dual exhaust on for almost 2 years and I haven't had this problem yet, that must mean its bound to happen. where did you get those hangers at?

 

Dash Parts Distributors, local parts distributor that we deal with through work, get stuff super cheap, its great! Paid $2 each for the hangers! they are basically identical, but a little more heavy duty! If what Shane says is true (usually is!! haha) I will pick up another couple and weld some reinforcing in there and maybe weld them onto the frame. hmmmm

 

aka any parts store. Hangers run about $1.50 to $2 US. Come in a white and blue box. Don't forget new U-bolts/exhaust clamps.

BTW....my rear hangers were always welded to the pipe. I totally fixed the breaking issue by installing these hangers you've installed.