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  1. #1
    ride far & fast bigal123's Avatar
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    change cassettes from 9sp to 10sp

    hi all i want to change my casstte from a shimano ultra 9speed to 10 speed. besides extending or changing the chain, would i need to change the derailleur

  2. #2
    Senior Member Bill Kapaun's Avatar
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    You would need a different chain and shifters.
    You mean Ultegra, not Ultra.
    Ultra is a term used for the cog spacing on some 6 speed Free Wheels.

  3. #3
    Banana seat Captain Slow's Avatar
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    Your present rear derailler will work fine. You'll need a 10-speed brifter, which makes that vital 10th click that you 9-speed doesn't, and a 10-speed chain, which has a narrower OD than the 9-speed. This would be a good time to upgrade to a better cable, since it all has to come apart anyway.

    Once the new bits are in place, tune that rear derailler, and you're good to go.

  4. #4
    Senior Member
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    If your crankset is a double you need new 10-speed shifters, 10-speed cassette, 10-speed chain and bar tape. If you have a triple crankset you may or may not need a new 10-speed crankset. The 9-speed derailleurs will work with a 10-speed drivetrain.
    BTW, 10-speed shifters click 9 times and 9-speed shifters click 8 times because the first position is with all the cable out.

    Al

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