The little bracket that the other end of the rod is connected to is the shifter linkage that actually shifts the tranny. If only the aluminum bracket is broken, it's an easy fix. Take it to your local H-D dealer and have them order you a new one. To remove it, you just have to pull the screw all the way out and it should slide off. (It's splined.) Now, if the SHAFT is what is broken, you can still replace it, but it will take a bit of a tranny rebuild.