Shimano XTR CRANKSET 168 MM Q-FACTOR 51.8 MM CHAIN LINE 2X12s

Crankset

XTR CRANKSET 168 MM Q-FACTOR 51.8 MM CHAIN LINE 2X12s

Specifications

Manufacturer
Shimano
Name
XTR CRANKSET 168 MM Q-FACTOR 51.8 MM CHAIN LINE 2X12s
Series
M9100
MPN
FC-M9120-B2
Groupset
XTR
Rear Speeds
12
Front Speeds (chainrings)
2[1]
Drivetrain Brand
Shimano
Chainring Sizes
38, 28[2]
Crank Length (mm)
165, 170, 175
Spindle Interface
24mm
Chainring Mount
Shimano Direct Mount 2x
Chainline (mm)
51.8[2]
Q-Factor (mm)
168[3]
Compatible Chain Standards
Shimano HG+ (Hyperglide+, 12s)[2]
Weight (g)
627[2]
Sources
  1. [1] AI-extracted, not yet checked against a named source (added 9 Feb 2026): Front Speeds (chainrings)
  2. [2] productinfo.shimano.com, checked 7 Aug 2026: Chainring Sizes, Chainline (mm), Compatible Chain Standards, Weight (g)
  3. [3] bike.shimano.com, checked 13 Aug 2026: Q-Factor (mm)

Compatibility

Shimano XTR CRANKSET 168 MM Q-FACTOR 51.8 MM CHAIN LINE 2X12s is a Shimano crankset. It is a 12-speed component. Everything listed below was matched on a specification we hold for both parts: the interface each pairing actually depends on, such as freehub body, speed count, actuation or mounting standard. Where we could not verify that interface, the part is left out rather than assumed to fit.

Front derailleurs for this crankset20

XTR SIDE SWING FRONT DERAILLEUR (CLAMP BAND MOUNT ) 2X12sRecommended

Shimano

XTR SIDE SWING FRONT DERAILLEUR (CLAMP BAND MOUNT ) 2X12s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
XTR SIDE SWING FRONT DERAILLEUR (DIRECT MOUNT ) 2X12sRecommended

Shimano

XTR SIDE SWING FRONT DERAILLEUR (DIRECT MOUNT ) 2X12s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
XTR SIDE SWING FRONT DERAILLEUR (E-TYPE MOUNT ) 2X12sRecommended

Shimano

XTR SIDE SWING FRONT DERAILLEUR (E-TYPE MOUNT ) 2X12s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
ALIVIO FRONT DERAILLEUR SIDE SWING (CLAMP BAND) 2X9s (FD-M3120-M-B)Mechanically compatible

Shimano

ALIVIO FRONT DERAILLEUR SIDE SWING (CLAMP BAND) 2X9s (FD-M3120-M-B)

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
ALIVIO FRONT DERAILLEUR SIDE SWING (DIRECT MOUNT) 2X9sMechanically compatible

Shimano

ALIVIO FRONT DERAILLEUR SIDE SWING (DIRECT MOUNT) 2X9s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
ALIVIO FRONT DERAILLEUR SIDE SWING (E-TYPE MOUNT) 2X9sMechanically compatible

Shimano

ALIVIO FRONT DERAILLEUR SIDE SWING (E-TYPE MOUNT) 2X9s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
ALTUS FRONT DERAILLEUR TOP SWING (CLAMP BAND MOUNT) 2X9sMechanically compatible

Shimano

ALTUS FRONT DERAILLEUR TOP SWING (CLAMP BAND MOUNT) 2X9s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
CUES SIDE SWING FRONT DERAILLEUR (CLAMP BAND MOUNT) 2X10/9sMechanically compatible

Shimano

CUES SIDE SWING FRONT DERAILLEUR (CLAMP BAND MOUNT) 2X10/9s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
CUES SIDE SWING FRONT DERAILLEUR (CLAMP BAND MOUNT) 2X11/10sMechanically compatible

Shimano

CUES SIDE SWING FRONT DERAILLEUR (CLAMP BAND MOUNT) 2X11/10s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
CUES SIDE SWING FRONT DERAILLEUR (DIRECT MOUNT) 2X10/9sMechanically compatible

Shimano

CUES SIDE SWING FRONT DERAILLEUR (DIRECT MOUNT) 2X10/9s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
CUES SIDE SWING FRONT DERAILLEUR (DIRECT MOUNT) 2X11/10sMechanically compatible

Shimano

CUES SIDE SWING FRONT DERAILLEUR (DIRECT MOUNT) 2X11/10s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
CUES SIDE SWING FRONT DERAILLEUR (E-TYPE WITHOUT BOTTOM BRACKET PLATE MOUNT) 2X10/9sMechanically compatible

Shimano

CUES SIDE SWING FRONT DERAILLEUR (E-TYPE WITHOUT BOTTOM BRACKET PLATE MOUNT) 2X10/9s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
CUES SIDE SWING FRONT DERAILLEUR (E-TYPE WITHOUT BOTTOM BRACKET PLATE MOUNT) 2X11/10sMechanically compatible

Shimano

CUES SIDE SWING FRONT DERAILLEUR (E-TYPE WITHOUT BOTTOM BRACKET PLATE MOUNT) 2X11/10s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
CUES TOP SWING FRONT DERAILLEUR (CLAMP BAND MOUNT) 2X10/9sMechanically compatible

Shimano

CUES TOP SWING FRONT DERAILLEUR (CLAMP BAND MOUNT) 2X10/9s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
DEORE FRONT DERAILLEUR DOWN SWING (DIRECT MOUNT) 2X10sMechanically compatible

Shimano

DEORE FRONT DERAILLEUR DOWN SWING (DIRECT MOUNT) 2X10s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
DEORE FRONT DERAILLEUR SIDE SWING CLAMP BAND MOUNT 2X11sMechanically compatible

Shimano

DEORE FRONT DERAILLEUR SIDE SWING CLAMP BAND MOUNT 2X11s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
DEORE FRONT DERAILLEUR SIDE SWING DIRECT MOUNT 2X11sMechanically compatible

Shimano

DEORE FRONT DERAILLEUR SIDE SWING DIRECT MOUNT 2X11s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
DEORE FRONT DERAILLEUR SIDE SWING E-TYPE MOUNT 2X11sMechanically compatible

Shimano

DEORE FRONT DERAILLEUR SIDE SWING E-TYPE MOUNT 2X11s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
DEORE SIDE SWING FRONT DERAILLEUR CLAMP BAND MOUNT 2X10sMechanically compatible

Shimano

DEORE SIDE SWING FRONT DERAILLEUR CLAMP BAND MOUNT 2X10s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts
DEORE SIDE SWING FRONT DERAILLEUR DIRECT MOUNT 2X10sMechanically compatible

Shimano

DEORE SIDE SWING FRONT DERAILLEUR DIRECT MOUNT 2X10s

  • Both are set up for 2x
  • Both are Shimano drivetrain parts

Bottom brackets for this crankset20

XTR PRESS-FIT BOTTOM BRACKET 89.5/92 MM SHELL WIDTHRecommended

Shimano

XTR PRESS-FIT BOTTOM BRACKET 89.5/92 MM SHELL WIDTH

  • Both use a 24mm spindle
XTR THREADED BOTTOM BRACKET 68/73 MM SHELL WIDTHRecommended

Shimano

XTR THREADED BOTTOM BRACKET 68/73 MM SHELL WIDTH

  • Both use a 24mm spindle
386EVO ABEC-3 BB for 24mm (Shimano) CranksMechanically compatible

Wheels Manufacturing

386EVO ABEC-3 BB for 24mm (Shimano) Cranks

  • Both use a 24mm spindle
386EVO Angular Contact BB for 24mm (Shimano) CranksMechanically compatible

Wheels Manufacturing

386EVO Angular Contact BB for 24mm (Shimano) Cranks

  • Both use a 24mm spindle
878Mechanically compatible

Token

878

  • Both use a 24mm spindle
BB30 Outboard ABEC-3 BB for 24mm Cranks (Shimano)Mechanically compatible

Wheels Manufacturing

BB30 Outboard ABEC-3 BB for 24mm Cranks (Shimano)

  • Both use a 24mm spindle
BB30 Outboard Angular Contact BB for 24mm Cranks (Shimano)Mechanically compatible

Wheels Manufacturing

BB30 Outboard Angular Contact BB for 24mm Cranks (Shimano)

  • Both use a 24mm spindle
BB30 Outboard Ceramic Hybrid BB for 24mm Cranks (Shimano)Mechanically compatible

Wheels Manufacturing

BB30 Outboard Ceramic Hybrid BB for 24mm Cranks (Shimano)

  • Both use a 24mm spindle
BB30 Outboard ZERØ Ceramic BB for 24mm Cranks (Shimano)Mechanically compatible

Wheels Manufacturing

BB30 Outboard ZERØ Ceramic BB for 24mm Cranks (Shimano)

  • Both use a 24mm spindle
BB30ARMechanically compatible

Token

BB30AR

  • Both use a 24mm spindle
BB3724Mechanically compatible

Token

BB3724

  • Both use a 24mm spindle
BB38624PSMechanically compatible

Token

BB38624PS

  • Both use a 24mm spindle
BB386PSMechanically compatible

Token

BB386PS

  • Both use a 24mm spindle
BB4124PSMechanically compatible

Token

BB4124PS

  • Both use a 24mm spindle
BB46BR24Mechanically compatible

Token

BB46BR24

  • Both use a 24mm spindle
BB47R24Mechanically compatible

Token

BB47R24

  • Both use a 24mm spindle
BB47V24Mechanically compatible

Token

BB47V24

  • Both use a 24mm spindle
BB841PSMechanically compatible

Token

BB841PS

  • Both use a 24mm spindle
BB841T-41Mechanically compatible

Token

BB841T-41

  • Both use a 24mm spindle
BB841T-42Mechanically compatible

Token

BB841T-42

  • Both use a 24mm spindle

Frequently Asked Questions

What fits Shimano XTR CRANKSET 168 MM Q-FACTOR 51.8 MM CHAIN LINE 2X12s?

On this page we list front derailleurs for this crankset, bottom brackets for this crankset, chainrings that fit this crankset, chains for this crankset. Each listing was matched on a specification we hold for both parts; anything we could not verify is omitted rather than assumed to fit.

Can I use a higher or lower speed chain with Shimano XTR CRANKSET 168 MM Q-FACTOR 51.8 MM CHAIN LINE 2X12s?

No. Shimano XTR CRANKSET 168 MM Q-FACTOR 51.8 MM CHAIN LINE 2X12s is a 12-speed component and needs a 12-speed chain. Chains for different speed counts have different external widths and inner-plate profiles, which causes poor shifting or interference with the neighbouring sprockets.