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Shimano UN53 Square Taper BB

Item #: BB407A00
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USD$9.99 67% off USD$29.99 msrp
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Shimano Deore LX/STX-RC/STX UN53 bottom brackets are low maintenance, high reliability bottom brackets suitable for a wide variety of applications.
  • English Threaded
  • Chromoly spindle
  • Fits square taper style cranks
  • Crank bolts not included

REVIEW SNAPSHOT®

by PowerReviews
Shimano UN53 Square Taper BB
 
4.4

(based on 7 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to install (3)

Cons

    Best Uses

        • Was this a gift?:
        • No (3)

      Reviewed by 7 customers

      Sort by

      Displaying reviews 1-7

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      5.0

      Great Replacement Crankset for HYBRID

      By Mark T

      from Verona, PA (Pittsburgh area)

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Attractive Design
      • Easy To Install

      Cons

        Best Uses

        • Casual Riding

        Comments about Shimano UN53 Square Taper BB:

        Installed on Trek Verve 3 as a replacement for the stock Suntour NEX, 48/38/28 which wore out after riding 2000 mile this year. I bought this crank because I live just outside of Pittsburgh and it is mostly hills (other than the rails-to-trails bike paths). I wanted the slightly smaller gear rings for the middle and smaller gears. I also have long legs (34" inseam) so I also got the longer cranks arms to give me more torque.

        Installation was very easy. My friend has a a very basic bicycle tool kit and we were able to replace the Crankset without difficulty. I also bought a bottom bracket but did not need to replace it. The stock bottom bracket on the Verve is compatible with the crankset.

        Today I took it out and road up some 4% grades and a am very happy with the performance. With the smaller gears it is much easier to maintain my cadence when climbing and even though the gearing is lower resulting in faster climbing.

        • Was this a gift?:
        • No
         
        5.0

        Get the UN-55 first

        By HoldTheOnions

        from Las Vegas

        About Me Avid Cyclist

        Pros

        • Durable
        • Easy To Install

        Cons

          Best Uses

            Comments about Shimano UN53 Square Taper BB:

            I have the UN-55 right now. If you are concerned about the plastic cup, then spend the extra $12 on the UN-55 to get the metal cup and then you can buy the UN-53 in the future for replacements and just re-use the metal cup. I'm close to 3k miles on the UN-55 and it's still perfectly smooth, so not sure how long it will be before I need a new one, but that's the plan anyway. :)

            • Was this a gift?:
            • No
             
            4.0

            Great price, great choice

            By Stonero

            from México City

            About Me Commuter

            Verified Buyer

            Pros

            • CHEAP
            • Durable
            • Easy To Install

            Cons

            • Heavy

            Best Uses

            • Multi-use

            Comments about Shimano UN53 Square Taper BB:

            Great choice, low price

            • Was this a gift?:
            • No
             
            4.0

            Ordered Friday, received on Monday!

            By Frank the Tank

            from Michigan

            Verified Reviewer

            Pros

            • Fast Shipping
            • Part fits

            Cons

              Best Uses

                Comments about Shimano UN53 Square Taper BB:

                Part fits. No more squeaky when I pedal. Wonderful silence.

                 
                4.0

                Could have worked, other problems arose.

                By Stubs

                from Lakewood, WA

                Verified Buyer

                Pros

                • Metal cage
                • Sealed bearings

                Cons

                  Best Uses

                    Comments about Shimano UN53 Square Taper BB:

                    As always, make sure you measure properly, but also check the threads to make sure they are clean and sharp. Mine had a casting flaw that caused the BB to skip a thread and it was all downhill from there. Nice product from what I could tell, but not able to use it right now for other reasons.

                    (2 of 2 customers found this review helpful)

                     
                    4.0

                    Great price for durability

                    By Eric

                    from San Bernardino, CA

                    Verified Reviewer

                    Pros

                    • price
                    • Strength

                    Cons

                    • Plastic cup
                    • Weight

                    Best Uses

                      Comments about Shimano UN53 Square Taper BB:

                      Great bottom bracket for the money, despite the plastic non-drive side cup, it is a very durable unit. Its a tad heavier than the un-73 but for the price and longevity, you can't complain.

                      (1 of 1 customers found this review helpful)

                       
                      5.0

                      It's a Bottom bracket

                      By BTphoto

                      from Wpb Fl.

                      Verified Buyer

                      Comments about Shimano UN53 Square Taper BB:

                      shimano durability

                      Displaying reviews 1-7

                      Back to top

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