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Shimano BB-UN25

Average Rating 4/5
# of Reviews 1
MSRP $
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Description:
  • Sealed cartridge assembly
Where To Buy


Cambria Bicycle Outfitters


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    Submitted by Daniel Haden a Weekend Warrior from Houston, TX
    Date Reviewed: May 12, 2006
    Favoriate Trail:Houston, TX
    Duration Product Used:1 Year
    Price Paid: $25.00
    Purchased At:Southwest Schwinn
    Strengths:It performs exactly like the UN52, UN53, UN73, and you can't tell a difference.
    Weaknesses:Square taper may "rock" just a bit when standing on the pedals, causing a "rub rub" sensation that is felt, not heard. This is chain drag. This is true of any square taper BB.
    Similar Products Used:UN53 and similar
    Bike Setup:Have used it on road bikes, MTB, and just recently had one installed on my crusier. It is tight, friction-free and fantastic.
    Bottom Line:If you spend a lot of time standing up on the pedals, and not on the seat, then don't choose square taper.

    If you ride normally or occaisionally stand up for hills and little else, then this bottom bracket will be fantastic.

    Square tapers are touring class bottom brackets, and, for this, they really go the distance. For distance and for road is the home of square taper.

    The tiny bearings make for zero bb friction during most of your ride. That's a nice feature for people that like an easy spin for uphills or into a headwind.

    But, if you're a dedicated, power-lifting, out-of-the-seat, pedal masher, who is strong enough to flex your cranks, then avoid square taper technology alltogether.
    Value Rating:5Overall Rating:4






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