The no-compromise Di2 system delivers Shimano’s ultra-precise and lightning-quick electronic shifting capabilities, with increased durability across each component. Engineered to withstand the demands of real-world racing, the new group features Shimano’s most robust drivetrain construction to-date, more intuitive ergonomics, predictable braking control, and new customisation features that every rider can appreciate.

It all started with the search for the ultimate MTB racing components and now the XTR continues 27 years of innovation with even more speed, focus and control. It is jam-packed with the technological advantages needed to push the boundaries of today's insanely demanding courses. It is lighter, smoother, more durable and versatile to transfer all pedal-pounding watts into ground speed with extreme efficiency.

Shimano XTR HB-M9210-B Front Hub
The XTR HB-M9210-B front hub offers improved reliability and performance. Stainless steel cartridge bearings with pre-load adjustment and new seal designs mean less rolling resistance. This front hub is offered in a boost (110x15mm) configuration and both 28H and 32H conventional options.

Specifications
Cartridge Bearings: XTR hubs are now available with easily serviceable cartridge bearings.
Rotation: Cartridge bearings, optimised seal designs and preload adjust keep the hub consistently rolling smoothly.
Drilling Options/Spacing: Available in conventional 110x15 mm boost spacing and traditional 28H and 32H drilling options.