Shimano Dura-Ace R9100 Hollowtech II Bottom Bracket
The Shimano Dura-Ace bottom bracket is designed for high-performance road cycling, supporting Shimano Hollowtech II crank systems with 24mm spindle compatibility. Built for 68mm and 70mm threaded BSA frame standards, it provides a precise and secure interface between frame and crankset.
High-quality sealed cartridge bearings reduce friction while improving durability and power transfer efficiency, delivering smooth and consistent pedaling performance across a wide range of riding conditions. The external cup design helps distribute load more effectively and improves overall drivetrain stiffness.
Engineered for reliability and low maintenance, the system is designed to withstand long-term use in demanding road cycling environments.
Key Features
- Hollowtech II Compatibility – Designed for Shimano 24mm spindle crank systems
- Sealed High-Precision Bearings – Low friction performance with improved durability and smooth rotation
- Threaded BSA Fitment (68/70mm) – Secure, serviceable interface for standard road frames
Original: $52.00
-65%$52.00
$18.20Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Shimano Dura-Ace bottom bracket is designed for high-performance road cycling, supporting Shimano Hollowtech II crank systems with 24mm spindle compatibility. Built for 68mm and 70mm threaded BSA frame standards, it provides a precise and secure interface between frame and crankset.
High-quality sealed cartridge bearings reduce friction while improving durability and power transfer efficiency, delivering smooth and consistent pedaling performance across a wide range of riding conditions. The external cup design helps distribute load more effectively and improves overall drivetrain stiffness.
Engineered for reliability and low maintenance, the system is designed to withstand long-term use in demanding road cycling environments.
Key Features
- Hollowtech II Compatibility – Designed for Shimano 24mm spindle crank systems
- Sealed High-Precision Bearings – Low friction performance with improved durability and smooth rotation
- Threaded BSA Fitment (68/70mm) – Secure, serviceable interface for standard road frames
