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Class-leading XTR 12-speed crank set, integrating the bottom bracket and crank set into a strong, rigid, yet lightweight unit.
Class-leading XTR 12-speed crank set, integrating the bottom bracket and crank set into a strong, rigid, yet lightweight unit.
Shimano

Shimano Crank Set XTR M9100 52mm 12-Speed - 170mm Arm Length

£158.00
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Shimano Crank Set XTR M9100 52mm 12-Speed - 170mm Arm Length

Season:AW25

Brand:Shimano

Code:staffxtr 2

Shimano XTR M9100 Crankset – Lightweight XC Performance & Power Transfer

The Shimano XTR M9100 crankset delivers class-leading performance for cross-country riding, combining ultra-lightweight construction with exceptional stiffness and power transfer. Designed for aggressive XC racing and high-performance trail riding, it represents Shimano’s most refined crank technology.

Built using HollowTech II construction, the XTR M9100 balances strength, weight reduction, and efficiency for maximum rider output on every pedal stroke.


Key Features

  • Direct mount chainring design for improved stiffness and easy replacement
  • Lightweight HollowTech II hollow forged crank arms
  • Optimised 12-speed drivetrain compatibility
  • Narrow 162mm Q-factor for efficient pedalling dynamics
  • 52mm chain line for modern XC frame standards
  • Compatible with 10–45T and 10–51T cassettes
  • 1x and 2x drivetrain conversion options
  • Designed for HG+ 12-speed chains only

Advanced Chain Retention Technology

Dynamic Chain Engagement+

Shimano’s Dynamic Chain Engagement+ tooth profile is designed specifically for single-chainring systems used in XC, trail, and enduro riding.

It improves chain retention on rough terrain, reducing chain drop risk and ensuring smoother, more consistent pedalling under load.


Smooth & Efficient Drivetrain Performance

HyperGlide+ Compatibility

When paired with Shimano HG+ 12-speed chains, the system delivers:

  • Faster, more precise shifting under load
  • Improved chain stability over rough terrain
  • Reduced drivetrain noise and wear
  • Smoother power transfer during acceleration

The extended inner link design improves engagement with the chainring, reducing vibration and increasing efficiency across varied terrain.


HollowTech II Construction

Optimised Stiffness & Weight Balance

Shimano’s HollowTech II technology uses a hollow forged crank arm design to deliver the ideal balance of:

  • Low weight for improved endurance
  • High stiffness for efficient power transfer
  • Long-term durability under XC race conditions

By integrating the bottom bracket axle with the crank arm, Shimano improves rigidity while reducing system flex.


Outboard Bearing System

Stable, Efficient Power Delivery

The outboard bearing design improves weight distribution and pedalling stability, helping maintain smooth rotation and long-term efficiency.

The 24mm diameter axle system provides a proven balance of stiffness, strength, and reliability for demanding off-road use.


Specifications

  • Model: Shimano XTR FC-M9100-1
  • Speed: 12-speed
  • Chain line: 52mm
  • Q-factor: 162mm (1x setup)
  • Crank arm length: 170mm
  • Chainring compatibility: Direct mount SM-CRM95
  • Bottom bracket: Not included
  • Use with: Shimano HG+ 12-speed chains only

Compatibility

Designed for modern XC mountain bike setups, the XTR M9100 crankset works best with:

  • Shimano XTR M9100 drivetrain components
  • 12-speed HG+ chains
  • 10–45T / 10–51T cassette systems
  • XC and trail-oriented MTB frames

Summary

The Shimano XTR M9100 crankset is built for riders who demand lightweight efficiency, race-level stiffness, and reliable chain retention across technical terrain. A benchmark in modern XC crank design.

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