Kit includes one each of the following:

• RD-M9250-SGS Long Cage Derailleur (Max 51T)
• SW-M9250 Shift Switch
• BT-DN320 Di2 Battery
• EC-DN100 Di2 Battery Charger
• SM-CN910-12 Quick Chain Link (Pair)

The all-new XTR M9250 long-cage derailleur paired with a standard 10-51T M9200 cassette (sold separately) gives riders and racers the speed, range, and robustness to tackle every trail on the mountain.

With built-in Automatic Impact Recovery, an impact-deflecting shape, and simple covered-pulley solutions, this derailleur stands up to harsh trail impacts and still retains its lightning-quick shifting speed and top-level performance.