hub,
what's different? inquiring minds what to know.
service manual only shows one rear caliper for all bikes. The only dif I have ever seen is that I/S rear calipers are painted black.
The pistons in the Interstate caliper are smaller in diameter. That means the caliper bodies are
different (smaller "piston holes")... different part numbers on the pads make me want to think
they must be different too, but I don't remember actually comparing them...
-Mike