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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 10-19-05, 06:49 PM   #1
ronco05
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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.
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Old 10-19-05, 07:06 PM   #2
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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?
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Old 10-19-05, 07:20 PM   #3
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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.
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Old 10-20-05, 05:12 AM   #4
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A couple of mm on the spindle length shouldn't matter at all.
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