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  1. #1
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    bottom bracket question

    i have to replace the bottom bracket on my specialized hard rock sport.the spindle is 68x125mm.the closest length i can find is the shimano un53 68x127mm.can i use this bb? thanks.

  2. #2
    Scooby Snax
    Guest
    Acording to Specialized the BBthe hardrock sport for '05 is a truvative 68mm X 113?
    What year is yours, and do you know if your bike has square or splined BB?

  3. #3
    Junior Member
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    the bike is about 6 years old and the shaft is square.the length of the spindle is 125mm. i am a machinist so i am pretty good at measuring stuff.

  4. #4
    fmw
    fmw is offline
    Hoosier Pedaler fmw's Avatar
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    A couple of mm on the spindle length shouldn't matter at all.

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