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  1. #1
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    2001 Trek 4500 bottom bracket

    What size bottom bracket does the 2001 Trek 4500 come with?

    I'm looking to replace the stock one.
    Last edited by Dictatorsaurus; 10-28-2009 at 01:20 AM.

  2. #2
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    It will be:

    73mm width (most Trek MTBs are 73mm)
    24tpi British threading
    113mm spindle length for square taper cranksets (but length is dependent on model of crankset, so you need to check)

    If in doubt, just take some measurements yourself or extract the BB and read the label.

  3. #3
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    The crankset is Shimano Altus C90, 24/34/42 teeth

  4. #4
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    Agree with standard3x, my '99 Trek 6500 has a 73x113 square taper BB.

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