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  1. #1
    Senior Member TehK's Avatar
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    105 components and 9s cassette

    I'm getting a killer deal on a set of older road wheels with a 9s cassette, the owner does not know if the freewheel will fit a 10s cassette on it, so I was wondering if there are any issues with running a 9s drivetrain with 105 shifters and rear derailer.

    Thanks

  2. #2
    40 something and counting forensicchemist's Avatar
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    If your shifters are also 9 speed, you'll be fine......10 speed shifters and a 9 speed cassette don't mix well. That said, you should be able to remove the 9 speed cassette and replace with a 10 speed....and don't forget the spacer for that 10 speed cassette.....

    good luck.

  3. #3
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    Just a question since I don't know, is there any difference in the chains between the 10s and 9s?
    Jim Bushard

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    40 something and counting forensicchemist's Avatar
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    yes.....

  5. #5
    Senior Member TehK's Avatar
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    Thanks, the shifters are the new 105 ones, they say that they are compatible with 9s and 10s cassettes, but I have heard otherwise.

  6. #6
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    The Shimano hubs, except some quirky Dura Aces, usually accept 8-9-10 speed cassettes. So, you can try to install a 10-speed cassette.

  7. #7
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    Quote Originally Posted by TehK View Post
    Thanks, the shifters are the new 105 ones, they say that they are compatible with 9s and 10s cassettes, but I have heard otherwise.
    That doesn't sound right. Shimano STI shifters are either 9-speed or 10-speed but not both. The rear derailleur will work with either and that may be what you were told.

    Your freehub should easily accept a 10-speed cassette. As mentioned, use the very thin spacer that comes with the cassette. You will also need a 10-speed chain.

  8. #8
    Senior Member
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    Your shifters are compatible with a double or triple crankset. If they are 10-speed then they are 10-speed only.

  9. #9
    Senior Member TehK's Avatar
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    Thanks. I did read that the shifters were both 10s and 9s, and double and tripple compatible. Thanks, I'll try and fit a 10s cassette on there.

  10. #10
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    TehK, regarding the "shifters". You aren't by chance mixing up the terms "shifter" and "derailleur"?

    Shifters, (the part on the handlebars that you actually shift) like said above, are either 9 speed or 10 speed. They can however be compatible with either double or triple front cranks.

    Derailleurs (rear) are labeled 9 or 10, but either, if properly adjusted, will work with either 9 or 10 speed shifters.

    Regardless, unless the wheel you're looking at has the "10 speed only" Dura Ace hub, it is will most likely take an 8, 9 or 10 speed cassette, with the proper spacers.

    What kind of wheel is it - because Mavic is a little different. Still works, but takes different spacers.

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