Originally Posted by
operator
I highly doubt a 9s chain will index correctly on a 8s all system, rear OR front. 8 speed front derailleurs have a wider cage.
Why you guys are telling this dude that it is compatible is beyond me. It's like putting a 10 speed chain on a 9 speed system. It simply will not work very well.
Because some of them
have actually done it and it works well for them.