Dura-Ace

The Shimano Dura-Ace BB9000 Hollowtech II bottom brackets deliver the precision and performance expected from Shimano's flagship road component family. Built for riders who demand dependable drivetrain operation, these bottom brackets are offered in multiple configurations to fit a range of frame standards.

• Available in English (1.37" x 24tpi, 68mm shell), Italian (36mm, 70mm shell), and BB86 (41mm I.D., 86mm shell) interface options.
• Designed for use with Hollowtech II cranksets, ensuring smooth rotation and secure bearing placement.
• Dura-Ace level construction, reflecting Shimano's top-tier road racing heritage.
• Choose the correct shell width and interface to match your frame's specifications.