XTR Rear Hub delivers quick 3.5° engagement and buttery-smooth performance in a lightweight Boost package
What Our Gearhead® Experts Are Saying:
"This hub is light, responsive, and super quiet when coasting. The fast engagement gives me confidence on techy climbs and switchbacks, and it’s smooth enough that I forget it’s even back there—exactly how a premium rear hub should feel."
Built for riders who demand top-tier performance from every component, the Shimano XTR FH-M9210-B Rear Hub combines fast engagement, durable internals, and low-drag rolling for XC, trail, and enduro riding. The 3.5-degree engagement angle ensures instant torque delivery when we need it most, while stainless steel cartridge bearings and improved seals keep things spinning smoothly with minimal maintenance.
The hub’s Boost 12x148mm spacing delivers added frame stiffness, and traditional 28h and 32h spoke drillings allow flexible wheel build options to suit weight or strength preferences. Whether you're racing tight switchbacks or hammering down chunky descents, the FH-M9210-B gives you the speed and silence to stay focused and fast.
Details
- Ultra-fast 3.5° engagement angle delivers immediate power transfer
- Boost 12x148mm spacing provides added stiffness for aggressive trail builds
- Stainless steel cartridge bearings offer smooth, low-friction rotation
- Preload adjustment system allows fine-tuned bearing tension
- Optimized seal design reduces drag and resists contamination
- Easily serviceable internals for long-term durability and performance
- Available in 28h and 32h spoke drillings for flexible wheel building options
- Item #SHIU1QA
- Hub Type
- microspline
- Rotor Compatibility
- centerlock disc
- Spoke Count
- 28h or 32h
- Activity
- cross-country, trail
- Manufacturer Warranty
- 3 year
- Manufacturer Part Number
- FH-M9210-B
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