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  1. #1
    Senior Member Cipher's Avatar
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    9 Speed Ultegra Chain?

    I was wondering what the compatibility issues (if any) are in using a 9 speed narrow chain in conjunction with an older 7 speed Ultegra Cassette?
    Speed Kills...It kills those that don't have it!

  2. #2
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    A 9 speed chain link is narrower than an 8 or 7 speed link. The chain has a tendency to bind up on the chainrings and causes chain suck like you wouldn't believe.

    Hope this helps

  3. #3
    Senior Member Cipher's Avatar
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    Originally posted by --walt--
    The chain has a tendency to bind up on the chainrings and causes chain suck like you wouldn't believe.

    Hope this helps

    Guess I won't try that then...
    Speed Kills...It kills those that don't have it!

  4. #4
    Senior Member ahuman's Avatar
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    srams make a chain that may fit!
    "I Love To Ride My Bicycle, My bicycle"

  5. #5
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    Originally posted by ahuman
    srams make a chain that may fit!
    Yeah, a shimano 9 speed is 6.6mm wide, a sram is 6.9 wide, a campy is 6,8mm.. A shimano 8 speed chain is 7.1mm. Shimano HG 9 speed cog width is 1.78 mm and HG 8 speed cog width is 1.85mm. I don't think it's an issue even with a shimano chain unless you have IG 8 speed stuff with a cog width of 2.35mm I have run worse mismatches with no consequences.

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