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Shimano Dura-Ace SM-BB9000 Bottom Bracket

Sale $27.97 - $31.99

Item # SHI0592

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  • One Color, 68/English ($27.97)
  • One Color, 70/Italian ($31.99)
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Item # SHI0592

The silent advantage

The new Shimano Dura-Ace SM-BB9000 Bottom Bracket continues the Shimano tradition of the outboard bearing, and like the whole 9000 group set, it's lighter, stronger, and faster than previous iterations. If this is your first endeavor with Dura-Ace, you should know that Shimano has long been the pioneer of external bottom brackets. In fact, its outside bearing positioning has proved to be so beneficial that Shimano adapted the same principles to its wheels. The efficiency of the system can be credited to its wide bearing stance. This distributes weight more evenly, and thus enhances stability and power transfer.

With the new Dura-Ace generation, you'll find that Shimano decreased the SM-BB9000 bearing size for a stellar weight reduction over 7900. This alone enabled the bottom bracket to decrease bearing friction, but the most notable benefit comes from BB9000's new seals. The new sealing system results in a 50% reduction in drag without compromising bearing protection. Less weight, smoother bearings, and increased longevity -- purely Dura-Ace.

The Shimano Dura-Ace SM-BB9000 Bottom Bracket is available in the color Black and in English (68mm) and Italian (70mm) threading.

  • External bottom bracket
  • Compatible with English (68mm) or Italian (70mm) threads

Tech Specs

Material:
[cups] aluminum
Shell Width:
[English] 68 mm, [Italian] 70 mm
Threading:
English, Italian
Recommended Use:
road cycling
Manufacturer Warranty:
2 years
Actual Weight:
One Color, 68/English: 76g

Reviews & Community

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Here's what others have to say...

Unanswered Question

I have a 1999 Trek 5000 carbon frame and would like to order this BB9000 to match up with my DA 7900 crank set (to replace the DA 7700 Octilink that was originally installed on the bike). I saw a previous answer that this 9000 BB is compatible with a DA 7900 crank set but need you to clarify if there is any compatibility issues with my bike regarding the "reversed" threading-the drive side turns clock-wise to loosen and counter-clockwise to loosen the non-drive side. Thank you.

55

Reliable, predictable and affordable!

  • Familiarity:I've put it through the wringer

If you are using a Shimano crank, save your $$$ and stick with the Dura Ace BB. In my experience, it rolls with the same low-resistance than the high-$$$ options and is made with typical Shimano quality. You won't spend time obsessing about weather it "feels better" than something else. Everything you need, nothing you don't.

Unanswered Question
Avg. ride time: 6h 59m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

can I use this bottom bracket with a FSA K-Force Light BB386 EVO 10sp Crankset? If not which one do I need? thanks.

Unanswered Question

I am trying to build a CX bike for commuting and racing a bit in cyclocross. I would want to fit this with a Shimano 105 CX 50 crankset. Does anybody have any idea if it will fit? If not any suggestions?

Will this work with a DA-7900 Crankset on a 2012 Cervelo P3?

Best Answer

Hello,



Yes this will absolutely work with a shimano dura ace crank on the Cervelo p3. I worked with cervelo for quite some time. I had an S5 personally and it was crazy fast. Good luck and have fun!

Unanswered Question

I am looking to build my first bike (scary prospect). I have a shimano 9000 set available. When I purchase a frame what brackets are compatible. I see bb30s, 86s, 68, and fsa. Which should I get?

Thanks in advance.

If I purchase a 52/36 172.5 Dura Ace 9000 crank would I go for English or Italian? I ride a Felt AR.



What's the difference?

Best Answer

Michael ,

you have an English Bottom Bracket , Italian Bottom Bracket Threads in the opposite way.

Avg. ride time: 7h 1m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

I saw an answer that this BB is compatible...

I saw an answer that this BB is compatible with 7800 crankset. Therefore, it is ok to use with 7900 crankset. Please confirm. Thanks.

Yes, That will be fine. The bearings changed to decrease resistance, but the fit and the internal diameter is the same.

I have a FSA MegaEXO BB 70/68, M36x24T...

I have a FSA MegaEXO BB 70/68, M36x24T Bottom Bracket with 24mm shafts. Will the DuraAce SM-BB9000 replace the FSA?

Its possible they could work, but FSA cranks should use FSA BB and Shimano to Shimano. FSA is on the high end of the 24mm tolerances and Shimano is on the low end so usually there are some fit issues.

Is this BB compatible with FSA crankset?

Is this BB compatible with FSA crankset?

Best Answer

Steve,



The Crank should be compatible with the Shimano BB as most FSA crank shafts are 24mm and Shimano Axles are 24mm so it should fit right up. Just insure you do not have a 30 mm axle shaft which is on BB30 cranks and PF30 cranks. I hope this helps contact me at ececala@backcountry.com if you have any other questions.



Thanks,

Enrico

Its possible they could work, but FSA cranks should use FSA BB and Shimano to Shimano. FSA is on the high end of the 24mm tolerances and Shimano is on the low end so usually there are some fit issues.



Technically they should work, but thats often not the case.

will this be compatible with an ultegra...

will this be compatible with an ultegra 6750 crankset? also, it is a better bb than the bbr60/bb6800?

Yes this is comparable with the Ultegra 6750 crank. The bearings tend to be better on the top shelf Dura Ace products than the rest of the line. If you have any additional questions, please contact me at jcrocker@backcountry.com.



Cheers,

Jaron

Can I use this bottom bracket with an...

Can I use this bottom bracket with an Ultegra 6800 cranckset?



thanks.

Yes, the new DA 9000 bottom bracket will work with the Ultegra 6800 crankset.

Compatible with Dura Ace 7800 cranks?

Compatible with Dura Ace 7800 cranks?

Best Answer

Hi,



The internal dimensions of the bottom bracket are unchanged between Dura Ace 7800 And the current 9000 version. Your Crankset will fit.

I currently ride a Dura Ace BB 7400, 70...

I currently ride a Dura Ace BB 7400, 70 (Italian) with 113mm spindle. Do I need a longer spindle to ride with the Dura Ace BB9000 BB?

the BB9000 is an external bottom bracket, while the BB 7400 was square tapered spindle style bottom bracket. The BB9000 will not be compatible with the 7400 crankset. If you have any questions, feel free to contact me. brett@competitivecyclist.com

would this be compatible with a shimano...

would this be compatible with a shimano 105 from 2 years ago?

Yes, the more recent 105 cranks use an external bottom bracket, which is compatible with the BB9000 bottom bracket. If you have any questions, feel free to contact me. brett@competitivecyclist.com