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  1. #1
    mtbr member
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    Aug 2005
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    264

    what size bearing in 2010 altitude 29er

    I think 2010, first year they come out with the altitude 29er. I'm doing the full winter overhaul, and need to replace the main pivot bearings. THey are from where the chain stays, and the BB meet.
    I've removed the old ones, but all the marks are worn off, anyone know what the bearing sizes are for that?
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  2. #2
    ups and downs
    Reputation: rockyuphill's Avatar
    Join Date
    Nov 2004
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    13,799
    The 2010 parts manual doesn't point specifically at the main pivot bearings on the Altitude 29, but they give specs for 2 different bearings on the Altitude 29 that it might be:

    12mm ID x 28mm OD x 8mm wide - 6001-2RS (same as main pivot on 26" Altitude RSL)
    12mm ID x 24mm OD x 6mm wide - 61901-2RS

    and the alloy Altitude 26" lists this bearing for main pivots
    12mm ID x 28mm OD x 12mm wide - 3001-2RS

    so which ever one matches the dimensions of your bearings, those ae the part numbers
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