Shimano XTR RD-M9250-GS Di2 Wireless Rear Derailleur – 12-Speed Medium Cage Shadow ESOptimized for impact survivability the 12-speed XTR RD-M9250 medium cage rear derailleur is the choice for both Shimanos top enduro athletes and weight-conscious XC racers alike especially when matched with the 9-45t compact cassette (cassette sold separately). Featuring all-new wireless Di2 shifting automatic impact recovery a redesigned wedge shape and 23 millimeters of additional ground clearance for a bash-free ride this rear derailleur stands out for the speed of its shift and its ability to keep riders competitive on the trail.

• Wireless Di2 paired with HYPERGLIDE+ technology result in smooth precise and instantaneous shifts
• Wide link structure skid-plate design durable carbon plate and solid pulley add robustness and longevity
• Automatic Impact Recovery function instantly returns the derailleur motor to its original position after impact
• Shadow ES design provides a slimmer stronger evolution of Shimanos pioneering chain-stabilizing Shadow concept
• Wedge shape of Shimanos most survivable rear derailleur to-date avoids more direct impacts and smoothly glances off rocks if there is a hit
• Tucked safely inside an enclosed space the battery wont budge even in rough terrain while remaining completely removable for charging

• TECH SPECS

• Largest Cassette Cog:45
• Rear Der/Shifter Compatibility: Shimano Mountain Di2
• Drivetrain Speeds: 12
• Cage Length: Medium
• Weight: 389g