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Shimano Dura-Ace SM-BB9000 Bottom Bracket

from $35.00 $49.95

Item # SHI0592 12% Off

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  • One Color, 68/English ($35.00)
  • One Color, 70/Italian ($45.00)
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Item # SHI0592

Description

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.

Tech Specs

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

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Here's what others have to say...

If I purchase a 52/36 172.5 Dura Ace 9000...

Posted on

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 Responded on

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

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

Posted on

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

Responded on

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...

Posted on

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

Responded on

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?

Posted on

Is this BB compatible with FSA crankset?

Best Answer Responded on

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

Responded on

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...

Posted on

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

Responded on

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...

Posted on

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

thanks.

Responded on

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

Compatible with Dura Ace 7800 cranks?

Posted on

Compatible with Dura Ace 7800 cranks?

Best Answer Responded on

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...

Posted on

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?

Responded on

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...

Posted on

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

Responded on

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