Shimano Deore XT RD-M8250-GS Di2 Wireless Rear Derailleur - 12-Speed Medium Cage Shadow ES Black/Gray. Optimized for impact survivability the 12-speed XT RD-M8250 medium cage rear derailleur is the top choice for everyday trail riding offering unmatched durability quick precise shifts and added weight savings when paired with the 9-45t compact cassette (cassette sold separately). Featuring all-new wireless Di2 shifting automatic impact recovery a 500% gear range and 23 millimeters of additional ground clearance for a bash-free ride the M8250 rear derailleur is built to be relentlessly reliable so you are free to focus solely on the trail ahead.

Di2 technology results in precise and clean wireless shifting

Pinpoint ultra-fast shifting and a no-sacrifice 500% gear range

Wide link structure skid-plate design durable aluminum plate and solid pulley add robustness and longevity

Automatic Impact Recovery function instantly returns the derailleur motor to its original position after impact

Shimano Shadow ES technology delivers a wedge-shaped design that reduces the derailleur’s front-facing surface area and eliminates edges that could catch on rocks and roots

Tucked safely inside an enclosed space the battery won’t budge even in rough terrain while remaining easily removable for charging

Solid pulley and shielded pulley teeth prevent trail debris from jamming up your flow