Originally Posted by Aurelius
I'm going to look into this. My riding buddy Dave used to be a bicycle mechanic, so he'll know how to replace a broken one.
Typically, a hanger is going to break well before the der is trashed. Its designed that way.
My buddy that munched a pair of Zipps the other week tore a bunch of spokes out of the rear wheel using his derailleur. Changed out the hanger, der was fine.
The Wheels Manufacturing hangers are typically stiffer than stock, so be aware that the 'fuse' in the system just got rated for a higher amperage. IOW the hanger is stiffer and you'll shift better but you also have a greater chance of messing up your derailleur.