- Model name: XTR M9100
- Bike Discipline: MTB
- Crank arm length (mm): 175 mm
- Bolt circel diameter: Direct
- Chain protector: Without Chain protector
- Crank technology: Hollowtech II
- Gear arms: 4
- Compatible chain: CN-M9100
- Rear speeds: 12 Speed
- Chain wheels: Single
- Weight: 511g
The SHIMANO XTR FC-M9100-1 crank features an entirely new construction, using direct mount chainrings, special gear tooth profile for improved chain retention, and a narrow 162mm Q-factor. The FC-M9100-1 uses a 52mm chain line and can be converted between 1x12 and 2x12, with 30, 32, 34, 36, and 38T chainrings available. On offer are 165, 170, and 175mm crank arms.