Sign Up
Click Here for Larger Image

Shimano Dura-Ace BB-R9100 Bottom Bracket

SALE: $34.19ea
In Stock Now
Ships Free!
Earn $3.41 in VIP credit (341 points)What's This?
This size is not eligable for VIP points
Please Confirm Size
Free Shipping on Orders over $50*

The Shimano Dura Ace BB-R9100 Bottom Bracket shares the same performance enhancing features as the previous 9000-series bottom bracket, using small diameter bearings to shave weight, reshaping the cones for better durability, and improving the seals to reduce friction while maintaining the same water and debris resistance.

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
Reviewed 9/22/2017
by CDLvelo
Cycling Enthusiast
Surrey, BC
Overall Rating
2 of 2 customers found this review helpful.
Dura Ace is the way to go

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).

Was this review useful to you? Yes/No
Thank you for your feedback.
A guide to bottom bracket standards.

We are committed to delivering outstanding value and service to our customers, every day.
Try us today to see why so many of our customers come back again and again.

*Orders received before 3:00PM Pacific time are shipped the same day (Mon-Sat). Orders over $50 are shipped free (USA only, excluding AK and HI). Some exceptions apply. See Shipping for details.