XTR M9250 Di2 I-Spec SGS Drivetrain Upgrade

Upgrade your 12-speed Shimano groupset on your MTB with Shimano's latest electronic, wireless XTR Di2 Drivetrain Kit. 

Specifications:

• Product type: rear derailleurs
• Speed: 12-speed
• Discipline: MTB (mountain biking)
• Di2: yes

Kit includes: 

• 1 x rear derailleur
• 1 x shift switch
• 1 x BT-DN320 battery
• 1 x EC-DN100 battery charger
• 1 pair x 12s Quicklink