XTR - HOLLOWTECH II - MTB Crankset - 168 mm Q-Factor - 2x12-speed
The SHIMANO XTR FC-M9120-B2 crank features an entirely new construction, using direct mount chainrings, special gear tooth profile for improved chain retention, and a narrow 182mm Q-factor. The FC-M9120-B2 uses a 51.8mm chain line and can be converted between 1x and 2x, with 38-28T chainrings available. On offer are 165, 170, and 175mm crank arms.
- Front double
- Combine wide range and close gear steps
- Alloy inner chainring is installed with outer chainring by bolts
- Faster acceleration
- New drive system
- Smoother driving even over bumpy terrain
- Special gear teeth profile designed for MTB riding usage
- Lighter and stiffer design & easy exchangeable chainring by direct mount and one key release
- Exchangeable of single and double chainring by direct mount
- Crankset can be used as common component
- Q-factor: 168 mm
- Chainline: 51.8 mm
TECHNOLOGIES
PRODUCT SPECIFICATIONS
| MODEL NO | FC-M9120-B2 |
|---|---|
| SERIES | XTR M9100 Series |
| Color | Series color |
| Average weight | 616 |
| Chainring combination | 38-28T |
|---|---|
| Compatible bottom bracket type_Outboard | ✔ |
| Crank fixing screw included | ✔ |
| Crank arm length (mm)_165 | ✔ |
| Crank arm length (mm)_170 | ✔ |
| Crank arm length (mm)_175 | ✔ |
| Spider/Gear arms | 4 |
| HOLLOWTECH II | ✔ |
| Optional chain guard_Without chain/bash guard | ✔ |
| Recommended bottom bracket_Press-fit | SM-BB94-41A |
| Recommended bottom bracket_Threaded (normal) | SM-BB93 |
| Threaded bottom bracket shell width (mm)_68 | ✔ |
| Threaded bottom bracket shell width (mm)_73 | ✔ |
| Q-factor (mm) | 168 |
| Chain line (mm) | 51.8 |
| Compatible chain | HG 12-speed |
| P.C.D. (mm) | Direct |
| Rear speeds | 12 (Front double) |
| O.L.D._QR/Nut (mm) | 141 |
| O.L.D._Thru (mm) | 148 |
REPLACEMENT PARTS
