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Shimano XT SM-BB70 Bottom Bracket

USD$23.99 20% off USD$29.99 msrp
Item #: BB276E00
USD$23.99 20% off USD$29.99 msrp
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The standard XT bottom bracket is a mainstay of modern mountain biking. This replacement set of Hollowtech II outboard bearing bottom bracket cups for Shimano XT M770 series of cranksets offers smooth, stiff performance for all Shimano cranks. Will also work for any Hollowtech II type mountain bike cranksets such as Shimano Deore or XTR. Note: Not compatible with Road type Hollowtech cranks.
  • Includes Left and Right Cups
  • English Threaded
  • Fits 68 or 73mm bottom bracket shells (most modern mountain bikes)
  • SM-BB70

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REVIEW SNAPSHOT®

by PowerReviews
Shimano XT SM-BB70 Bottom Bracket
 
4.4

(based on 16 reviews)

Ratings Distribution

  • 5 Stars

     

    (7)

  • 4 Stars

     

    (9)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to install (12)
  • Lightweight (10)
  • Durable (9)
  • Attractive (3)

Cons

No Cons

Best Uses

  • Mountain biking (11)
  • Upgrade (5)
  • Casual riding (3)
    • Reviewer Profile:
    • Avid cyclist (7), Casual/ recreational (4)
    • Was this a gift?:
    • No (13)

Reviewed by 16 customers

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Displaying reviews 1-10

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4.0

Good part for the price...

By Sawyer

from Bend, Or

About Me Avid Cyclist

Verified Buyer

Pros

  • Durable
  • Easy To Install
  • Lightweight

Cons

    Best Uses

    • Mountain Biking
    • Upgrade

    Comments about Shimano XT SM-BB70 Bottom Bracket:

    Great replacement or upgrade for your drivetrain. You can't beat the price for the quality of product on this one. So long as you follow proper installation and torque specs this BB should last for a good several years. This is my secon on this bike.

    • Was this a gift?:
    • No
     
    5.0

    It goes around and around well.

    By crossf1rst

    from KY

    About Me Competitive Cyclist

    Verified Buyer

    Pros

    • Durable
    • Easy To Install

    Cons

    • NONE

    Best Uses

    • Mountain Biking

    Comments about Shimano XT SM-BB70 Bottom Bracket:

    Basis for which all others are compared.

    • Was this a gift?:
    • No
     
    4.0

    nice solid bottom bracket

    By Hagen McCulloch

    from Montana

    About Me Casual/ Recreational

    Verified Buyer

    Pros

    • Durable
    • Lightweight

    Cons

      Best Uses

      • Mountain Biking
      • Upgrade

      Comments about Shimano XT SM-BB70 Bottom Bracket:

      Replacement for internal bb. Works great and was inexpensive.

      • Was this a gift?:
      • No
       
      4.0

      Best bang for your buck hands down

      By DR

      from Edmonton Alberta

      About Me Avid Cyclist

      Verified Buyer

      Pros

      • Durable
      • Easy To Install
      • Lightweight

      Cons

      • NONE

      Best Uses

      • Mountain Biking
      • Upgrade

      Comments about Shimano XT SM-BB70 Bottom Bracket:

      Quality and price excellent

      • Was this a gift?:
      • No
       
      4.0

      Good quality product at a great price!

      By Webmeister

      from Vancouver BC

      About Me Avid Cyclist

      Verified Buyer

      Pros

      • Durable
      • Easy To Install
      • Excellent Instructions

      Cons

        Best Uses

        • Casual Riding
        • Mountain Biking

        Comments about Shimano XT SM-BB70 Bottom Bracket:

        I replaced the original XT bracket after 5 years and am entirely happy with the stock product. Spending double or more for a "boutique brand" seems unnecessary and wasteful.

        • Was this a gift?:
        • No
         
        5.0

        Easy replacement and a perfect fit

        By Mike H

        from St. Louis, MO

        About Me Casual/ Recreational

        Verified Buyer

        Pros

        • Easy To Install

        Cons

          Best Uses

            Comments about Shimano XT SM-BB70 Bottom Bracket:

            This bottom bracket was a replacement BB for my 2009 Specialized Epic, which had a bad left side bearing. Installation was simple with the Park BBT-9 bottom bracket tool. Took about 10 minutes.

            • Was this a gift?:
            • No

            (0 of 1 customers found this review helpful)

             
            4.0

            Gets the job done.

            By MTB or road, let's do this

            from Panama City Beach, FL

            About Me Avid Cyclist

            Verified Reviewer

            Pros

            • Durable
            • Easy To Install
            • Lightweight

            Cons

              Best Uses

              • Mountain Biking

              Comments about Shimano XT SM-BB70 Bottom Bracket:

              It gets the job done.

              • Was this a gift?:
              • No
               
              5.0

              Great Upgrade

              By RigFlipper

              from Lansing, MI

              About Me Casual/ Recreational

              Verified Reviewer

              Pros

              • Attractive Design
              • Durable
              • Easy To Install
              • Lightweight

              Cons

                Best Uses

                • Mountain Biking

                Comments about Shimano XT SM-BB70 Bottom Bracket:

                Very Stiff and a huge weight difference. Replaced an old ISIS BB with this. Was really surprised at how easy it was to install, although I did need to pickup the correct BB wrench from Park (BBT-9).

                • Was this a gift?:
                • No

                (0 of 1 customers found this review helpful)

                 
                5.0

                Dont think get this one

                By TVDOG

                from RIVERSIDE

                About Me Casual/ Recreational

                Verified Buyer

                Pros

                • Durable
                • Easy To Install
                • Lightweight

                Cons

                  Best Uses

                  • Casual Riding
                  • Mountain Biking
                  • Racing

                  Comments about Shimano XT SM-BB70 Bottom Bracket:

                  loved it so much i put the same one back on smooth like butter after a short brake in readj. it to my liking a have not looked back yet

                  • Was this a gift?:
                  • No

                  (2 of 3 customers found this review helpful)

                   
                  4.0

                  smooth and light

                  By Maverick73

                  from Quito - Ecuador

                  About Me Competitive Cyclist

                  Verified Buyer

                  Pros

                  • Clear Instructions
                  • Easy To Install
                  • Lightweight

                  Cons

                  • Bearings Hard To Find
                  • Cost Of Bearings
                  • Not Enough Grease

                  Best Uses

                  • First Step To Go Pro
                  • Mountain Biking
                  • Upgrade

                  Comments about Shimano XT SM-BB70 Bottom Bracket:

                  This is a good one to start thinking in going pro... XT series matches with most of my expectations within light weight durability and performance. It's easy to install and almost maintainance free.
                  Notice that manufacturer does not recommend to dismantle it or try to fix it, but you must know that the only problem this stuff has is that bearings would get krunchi with poor maintenance and proper cleaning, but if it's so, you can find replacing bearings by half price or less and you can extract bearings off the cups and you'll have brand new bearings for one other 10000 miles!

                  • Was this a gift?:
                  • No

                  Displaying reviews 1-10

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                  Get free shipping with your $50 purchase today when you choose Standard Shipping at checkout. Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items

                   

                  Free Shipping Offer

                  Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

                  Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.