The XTR M9120 series of derailleurs brings a new level of drivetrain silence thank to decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with Shimano's new 12-speed cassettes boosts range.

Details:

• Application: MTB
• Technology: Shimano Shadow RD+
• Speed: 12-speed
• Long cage
• Total capacity: 41 T
• Max. front difference: 10 T
  
• Low sprocket max.: 45 T
• Low sprocket min.: 45 T
• Top sprocket max.: 10 T
• Top sprocket min.: 10 T
• Decreased rear derailleur tension at low gear position, to prevent high chain tension
• Add bumper at rear derailleur pulley cage
• Weight: approx. 241 g

Shimano Shadow RD+:
Less distraction quiet drive train. Rear derailleur stabilizer reduces chain slap. Simple solution for chain drop. Lighter and more efficient than roller type chain device.