XTR

Shimano XTR bottom brackets are engineered for riders who demand smooth, reliable performance from their drivetrain. Built with a new seal construction, these Hollowtech II bottom brackets are designed to promote smoother rotation and help keep out dirt and moisture, supporting consistent function ride after ride.

• Hollowtech II design for compatibility with Shimano XTR cranksets
• New seal construction aims to reduce rotational friction for a smoother feel
• Available in shell I.D. options including 1.37 and 41 to suit different frame specifications
• Part of the XTR series, known for high-performance mountain bike components