The Shimano Dura-Ace R9100 Hollowtech II Italian Bottom Bracket is engineered for top-tier cycling performance. Designed to integrate seamlessly with the Shimano Dura-Ace R9100 series, this bottom bracket offers exceptional durability and efficiency for competitive riders.

Compatible with Italian-threaded bottom bracket shells
Ensures smooth and reliable power transfer
Part of Shimano's renowned Dura-Ace R9100 series