Shimano Deore XT RD-8250-SGS Di2 12 Spd. Rear Derailleur w/no battery

No battery.

The Shimano Deore XT M8250 long-cage derailleur, paired with a standard 10-51t M8200 cassette (sold separately), gives riders of all types the range and robustness to tackle every trail on the mountain. With built-in Automatic Impact Recovery, a new impact-deflecting wedge shape, and simple covered-pulley solutions, this derailleur stands up to harsh trail impacts while retaining lightning-quick shifting speed and high performance.