Bicycle Mechanics - Another Ultegra 9/10 mix question...

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khackney
08-09-05, 01:11 PM
Ok, I'm doing some upgrading. I've got new Ultegra 9 speed STI brifters coming, a new 9 speed front derailer but a new 10 speed rear derailer. The Shimano tech paper said it will work. But will I have to use a 10 speed chain? No mention of that on their site.

sydney
08-09-05, 02:42 PM
Ok, I'm doing some upgrading. I've got new Ultegra 9 speed STI brifters coming, a new 9 speed front derailer but a new 10 speed rear derailer. The Shimano tech paper said it will work. But will I have to use a 10 speed chain? No mention of that on their site.QBP says it's compatible with 9 and 10 speed drivetrains.
juicemouse
08-09-05, 04:30 PM
I'd use a 9s chain.

hypersnazz
08-09-05, 11:01 PM
9 speed chain is what all the bikes that come stock with this setup use (9s gruppo with 10s rear derailleur), and it works beautifully. If you were to put a 10s chain on a 9s cassette it may or may not work as cleanly since 10s chains are a little narrower.