Dura Ace 7900 compatability...
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Dura Ace 7900 compatability...
Alright so I know the new DA has some new indexing and the front der needs the 7900 shifters and so fourth. My question, will the 7900 rear swap over ok with a 7800 front and 105 shifters/crank/cassette/chain? Any input would be great thanks!