Can you use this with a Dura-Ace 9 Speed?...
Can you use this with a Dura-Ace 9 Speed? I want a power meter and a new crank (running a FSA K Force) and this would be a nice upgrade until I am ready to go full 11 speed.
I wouldn't use this with a 9-speed, too many compatibility issues with the chain and derailleur. Would be legit to just wait - then pick up a screaming deal from Competitive when there is a super sale. Your 9-speed group as a whole will shift and perform better than a mis-matched group. :)