XTR HOLLOWTECH II MTB Crankset 168 mm Q-Factor 2x12-speed




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
    • New drive system
    • Special gear teeth profile designed for MTB riding usage
    • Crankset can be used as common component
    • Q-factor: 168 mm
    • Chainline: 51.8 mm
    • Faster acceleration
    • Smoother driving even over bumpy terrain
    • Lighter and stiffer design & easy exchangeable chainring by direct mount and one key release
    • Exchangeable of single and double chainring by direct mount



SERIES XTR M9100 Series
Color Series color
Average weight 616 g
Chain line (mm) 51.8
Chain ring combination 38-28T
Compatible BB type_Outboard
Compatible BB type Outboard
Compatible chain CN-M9100
Crank Arm Length 165 mm, 170 mm, 175 mm
Crank fixing bolt included
Crank arm length (mm)_165.0
Crank arm length (mm)_170.0
Crank arm length (mm)_175.0
Gear arms 4 arm
Optional chain guard_Without chain / bash guard
Optional Chain Guard Without chain/bash guard
P.C.D. (mm) Direct
Rear speeds 12 (Front double)
Recommended BB_Pressfit SM-BB94-41A
Recommended BB_Threaded (normal) SM-BB93
Threaded BB shell width_68mm
Threaded BB shell width_73mm
Threaded BB Shell Width 68 mm, 73 mm
Q-factor (mm) 168


  • Disc Brake Rotor SHIMANO STEPS CENTER LOCK Disc Brake Rotor 203/180/160/140 mm
  • Front Derailleur SHIMANO XTR SIDE SWING Front Derailleur (Direct Mount ) 2x12-speed
  • Rear Derailleur XTR Long Cage Rear Derailleur 12-speed
  • Crankset SHIMANO XTR HOLLOWTECH II MTB Crankset 162 mm Q-Factor 1x12/11-speed