FREE SHIPPING on orders of $50 or more.* Same day shipping before 3PM Pacific.
X
Questions? Call our experts!
1.800.651.4050
SHOP NEW ARRIVALS
DEAL OF THE DAY
ALL SALE ITEMS
SHOP CLOSEOUTS
Click to zoom

Shimano
Dura-Ace BB-R9100 Bottom Bracket

  (3 customer reviews)
Price
Reduced
Purchase this popular item
today and save 5%
In Stock Now
Sale
ea
$34.19
Save 5%
MSRP $35.99
Please Confirm Size
This item is currently out of stock. Click Notify Me to receive an email when the item becomes available.
InstantPrice MatchWhat is this?
Free Shipping on Orders Over $50*

The top of the bottom.

Like the 9000-series Dura Ace bottom bracket, the BB-R9100 is both lighter and more efficient than previous generations while remaining an industry leader in weather resistance and durability.

Using 19 slightly smaller ball bearings on each side instead of 15 larger ones shaves precious grams, and updated seals drop resistance by up to 75%. The cone profiles have also been redesigned for increased durability so the BB-R9100 can take the same amount of abuse as its larger-bearing forebears.

Available in English-threaded 68 mm shell and Italian-threaded 70 mm shell width versions. Includes TL-FC24 adapter for use with standard external bottom bracket tools designed for 44 mm OD cups. Compatible with the 24 mm spindles found on Hollowtech II cranks. Claimed weight is 65 g.

 

Bottom Bracket STD: English (BSA) 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
(2)
(1)
(0)
(0)
(0)
(67%)
(33%)
(0%)
(0%)
(0%)
Dura Ace is the way to go
rating
by CDLvelo
Cycling Enthusiast
Surrey, BC
4 of 4 customers found this review helpful.

Installed for my Dura Ace 7800 crankset. Installs easily, silent and smooth. Replaced my DA 7900 BB which had aftermarket ceramic hybrid bearings installed. The no load spin test is impressive. Real world, the Dura BB 9100 (or 7900 or 9000) is much better - smoother, quieter, less friction - yes folks... ceramics are not the best for low rpm (less than 10,000) applications. Ceramic hybrids wear poorly and create slop, noise, and increase friction. After several experiments and years of trying ceramic hybrid bearings, I'm sticking with DA stock (BB, derailleur pulley, and wheels).

Reviewed 9/22/2017
Was this review useful to you? Yes/No
Thank you for your feedback.
Dura Ace, the only way to fly.
rating
by JIM
Cycling Enthusiast
Farmington, MI

Like all Shimano Dura Ace gear, its top of the line. I was a bit surprised after installing it that the bearings seemed a little tight....not as free spinning as I'd expected.That said, it is very smooth. I expect that the bearings will ease up as I get more miles on them. I was replacing an old 7800 BB and that would have been impossible without the accompanying adapter. Not all sellers provide that adapter but they did. Thanks!

Reviewed 9/6/2018
Was this review useful to you? Yes/No
Thank you for your feedback.
Easy to install
rating
by Anonymous
Cycling Enthusiast

Anybody can install this with necessary tools

Reviewed 8/16/2018
Was this review useful to you? Yes/No
Thank you for your feedback.
Comparing bottom bracket types and standards.
You wanna go fast? Join the ceramic revolution!
Make your upgrades count. Here's the equipment that will help you ride your bike faster.
Campagnolo vs. Shimano vs. SRAM: demystifying groupsets.
What to consider when selecting a crankset for your road bike.