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  1. #1
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    Road or MTB chain with a 105 cassette?

    I have an old XT drivetrain, with a newish XT shadow derailleur.

    One of my brake levers is bent (nearly unusable), and I have the one-piece brake-shifter pods. I'm thinking that maybe I could get the bike to run 10-spd if I swap out the shifters for 10-spd shifters and just pick up a pair of cheap brake levers.

    Then I could throw on a 10-spd cassette. But rather than a 12-34, I could get a 105 12-25 road cassette, and the bike would have more closely spaced gearing. I don't think I need all that range on the back anyway. And I'll finish it off with a new 10-spd chain.

    Here's the question:
    Is there a difference between the 10-spd Shimano road and mtb chains? If so, which one would I want?

    As an aside, would my long cage rear derailleur be too long and cause some other sorts of problems?

  2. #2
    dru
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    from the very 1st post of the stcky above:
    5. 10 speed road chains are different from 10 speed mountain (dyna sys) chains. The dyna sys chain is a directional chain that is made to shift better with 10 speed mountain drivetrains.
    occasional cyclist

  3. #3
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    Hm, it seems like the 9spd derailleur won't work with the 10spd shifter at all.

  4. #4
    dru
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    That's too bad. I hate all this backwards incompatibility that the manufacturers like so much. It will be a long time before I go 10 speed.
    occasional cyclist

  5. #5
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  6. #6
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    Chains are chains are chains are chains. Shimano says you need a Dynasis chain but folks have been mismatching chains for a while.

    Get a 10spd KMC chain and call it a day. Cheap, lasts a long time, shifts better than SRAM, cheap, strong rivets are hard to break, cheap.

    If you're running a triple there's hardly a reason to need a 32+ tooth cog in the back. Maybe it's from years of riding SS and 1x9 but a triple with a mid/large range road cassette is better most of the time than a triple with a wide range MTB cassette.

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