Shimano Dura-Ace SM-BB9000 Bottom Bracket
Best high performance upgrade for dedicated road cycling enthusiasts.
A high-performance, low-friction bottom bracket designed for smooth power transfer. It offers a reliable, threaded solution that integrates seamlessly with standard road cranksets for consistent, long-lasting performance.
$33.95
at
Eurobikeparts
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Who it's for
- All-weather commuters and racers requiring reliable durability
- Performance cyclists seeking the lowest possible rotational resistance
- Weight-conscious riders looking to optimize their high-end road builds
Who should skip it
- Home mechanics who prefer using their existing tool collection
- Practical riders who prioritize component repairability over replacement
- Budget-focused cyclists looking for the best value-to-performance ratio
Performance breakdown
Rotational Efficiency
Low-friction bearings ensure minimal energy loss during high-cadence efforts.
Weather Resistance
Advanced sealing effectively keeps grit and moisture out of the drivetrain.
Frame Compatibility
The classic BSA threaded standard fits a vast range of frames.
Installation Simplicity
Standard external cup wrench interface makes swapping units quick and intuitive.
Structural Durability
Robust construction withstands the high torque demands of professional road racing.
Serviceability
Sealed cartridge design prioritizes replacement over internal bearing maintenance.
Key Specs
Thread Type
English (BSA)
Shell Width
68mm and 73mm
Spindle Diameter
24mm
Spindle Interface
Shimano Hollowtech II
Bearing Material
Steel
Bottom Bracket Standard
BSA Threaded
Intended Use
Road Cycling
Tool Interface
External Cup Wrench
Water Resistant
Yes
Serviceable Bearings
No
Know before you buy
Still have a question?
Ask Metto anything about the Shimano Dura-Ace SM-BB9000 Bottom Bracket before you decide.
