Shimano Ultegra BB-6500 Bottom Brackets


  • Average Rating: 4.28/5
  • MSRP: $ 39.99
  • # of Reviews: 25

Product Description

  • Oversize Bottom Bracket Spindle
  • Sealed Cartridge Assembly
  • Double and Triple Options


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    Reviews 1 - 5 (25 Reviews Total) | Next 15

    User Reviews

    Overall Rating:2
    Value Rating:4
    Submitted by Oj a Road Racer from

    Date Reviewed: September 21, 2008

    Strengths:    Strong

    Weaknesses:    huge rolling resistance

    Bottom Line:   
    Shimano bottom brackets are terrible! The ultegra SL bottom bracket and durace BB are the same BB. Pull the bearings out and compare the rolling resistance to a ceramic BB.

    Expand full review >>

    Similar Products Used:   Enduro ceramic BB

    Bike Setup:   Cervelo Soloist - to many custom bits to mention...


    Overall Rating:4
    Value Rating:4
    Submitted by carbon13 a Road Racer from

    Date Reviewed: December 26, 2007

    Strengths:    Not one problem what so ever.
    Did its job even when l weighed 260 lbs.


    Weaknesses:    Compared to newer ultegra external bearing bottom bracket it felt neither as stiff or smooth.
    Apparently some people have a bad track record with these but after my experience
    l dint see why.


    Bottom Line:   
    l have used this bottom bracket with italian thread for about nine years.
    How good was it? Never really notices it there during the hole time.
    The bike was ridden down many dirt roads but not though much rain and it didnt need to be replaced during that hole period and is now in storage should l build another italian bottom bracket bike.

    Expand full review >>

    Favorite Ride:   rolling hills

    Purchased At:   bought with bike

    Similar Products Used:   old square axel campag
    shimano 600
    new external bearing ultegra


    Bike Setup:   cannondale cadd8
    pro 6 degree stem 120mm
    syncross steat post
    ultegra rear derailleur,cranks,wide platform pedal


    Overall Rating:3
    Value Rating:4
    Submitted by Veronikafan a Recreational Rider from

    Date Reviewed: March 17, 2007

    Strengths:    Mainenence free. Inexpensive. Good alternative to Dura Ace model.

    Weaknesses:    Not as durable as some may say.

    Bottom Line:   
    I bought this bottom bracket for use with my otherwise all Dura Ace 9 speed group. I was warned away from the Dura Ace Octalink bottom bracket by reports of poor durability in wet conditions. The Ultegra BB lasted about 5,000 miles before seizing up. I replaced it with same and so far so good after another 5,000 miles. Time will tell if these are really as bulletproof as some say. I bought spares just in case. They were cheap enough.

    Expand full review >>

    Favorite Ride:   Hunterdon County, NJ

    Price Paid:    $29.00

    Purchased At:   Nashbar

    Similar Products Used:   Old-style Dura Ace 7400 ball-bearing bottom brackets.

    Bike Setup:   1999 Litespeed Classic, Look LDS fork, Cinelli bar & stem, Turbomatic saddle, Dura Ace 9 speed group, hand built tubulars


    Overall Rating:5
    Value Rating:5
    Submitted by ElSupreme a Road Racer from

    Date Reviewed: February 10, 2006

    Strengths:    Never dies.

    Weaknesses:    Only shimano cranks work. The ritchey crap cranks wont stay on for their life.

    Bottom Line:   
    Took years and thousands of miles of SERIOUS ABUSE. And is still perfect.

    Expand full review >>

    Favorite Ride:   In the SUN.

    Purchased At:   OEM

    Similar Products Used:   ISIS by truvative, FSA
    Ulterga in other bikes.
    CRAPPY ST truvative.


    Bike Setup:   10,000+ mile ABUSED Ultegra BB.


    Overall Rating:5
    Value Rating:5
    Submitted by cthomas a Recreational Rider from

    Date Reviewed: December 18, 2005

    Strengths:    Solid. Dependable. Durable. Quality.

    Weaknesses:    None.

    Bottom Line:   
    I was an early adopter of Octalink, and after riding several versions this is the best BB made. I eventually upgraded both of my bikes to FSA compact cranksets, and after finding out that ISIS was crap (not their fault, Shimano played their monopoly card here...shame on Shimano) shopped around to get both in Octalink.

    Even though both bikes are now Campy, I have kept the Ultegra bottom bracket (gasp) and cranks because they are so solid and reliable. Sure, someday I will likely upgrade to the new outboard bearing bottom bracket, but in the meantime this is the top of the line in my opinion.

    Don't waste your money on a D/A BB, because it is crap compared to this design. Put it on and ride it till it wears out. What more can you ask for?

    Expand full review >>

    Favorite Ride:   Anything flat

    Price Paid:    $35.00

    Purchased At:   eBay

    Similar Products Used:   Campy square taper, 105, Dura Ace.

    Bike Setup:   Custom Seven Alaris, Campy Chorus, FSA cranks (OCTALINK!), Proton wheels, Speedplay zero pedals.



    Reviews 1 - 5 (25 Reviews Total) | Next 15

    Review Options:  Sorted by Latest Review | Sort by Best Rating

    Ultegra BB 6500 at Supergo.com

    great price for anyone in the market..currently backordered but going for 27.95$ + s/h great deal for a BB that gets better reviews than the DA.   Read More »

    Ultegra 6500 BB ?

    Has anyone successfully diassembled an Ultegra octalink bottom bracket? They are called "sealed" which may simply mean pressed on gaskets or ??? Alternatively, I wonder if they ca   Read More »

    Ultegra BB-6500 availability

    Anyone knows where i can purchase this bottom bracket? for a triple,english threads. thanks   Read More »

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