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  1. #1
    mtbr member
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    Join Date
    Jan 2007
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    99

    Has crank spindle size changed?

    Looking at the new anthems that have a press fit BB, and was wondering if the PF BB uses the same crank spindle size as the "older" external bearing BB?
    IE, can I use my "old" XTR cranks with Shimano press fit BB's?
    Thanks

  2. #2
    mtbr member
    Reputation: olijay's Avatar
    Join Date
    Feb 2009
    Posts
    365
    Check this out:
    http://www.parktool.com/blog/calvins...ottom-brackets

    BB30 has 30mm spindles, Shimano's system has the old 24mm spindles and is designed for current Shimano cranks.

  3. #3
    ups and downs
    Reputation: rockyuphill's Avatar
    Join Date
    Nov 2004
    Posts
    13,914
    BB-91 Shimano press-in BB's are compatible with the old external BB's.
    I'm a member of NSMBA and IMBA Canada

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