Originally Posted by Calgary06
A question for those who changed their sprockets.
Did you also need to replace the diaphragm spring and shaft seal while you were in there?
Parts #1 and #21 on the parts fiche
I've been shopping around for prices and one company added the spring into the list I gave them.
No. I've changed my sprocket back and forth a couple of times and have not changed any other parts. That doesn't mean you shouldn't (I'm a mechanical idiot and don't know what is correct), just that so far my bike has not fallen apart as a result.