Shimano XTR RD-M9250 Di2 12-Speed Rear Derailleur

The all-new XTR M9250 long-cage derailleur paired with a standard 10-51T M9200 cassette 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.

Optimized for impact survivability, the 12-Speed mid-cage M9250 rear derailleur is the choice for both Shimano's top enduro athletes and weight-conscious XC racers alike, especially when matched with the 9-45 compact cassette. Featuring all-new wireless Di2 shifting, Automatic Impact Recovery, a redesigned wedge shape and 23mm 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.

Shimano XTR Shadow ES 12-Speed wireless rear derailleur for the ultimate in shifting performance and durability.

Technology

Shimano Shadow ES

Robust. Resilient. Ready For Anything.

The concept of a Shadow derailleur has evolved. It's slimmer, stronger, smarter, has a Shadow-style chain stabilizer, and has a motor unit with Automatic Crash Recovery that returns to its original position after impact.

• Automatic Impact Recovery: The new Automatic Impact Recovery function instantly returns the 12-Speed derailleur to its original position after impact. Ride on
• Low Profile, Slim Design: Experience fewer derailleur strikes with lower consequences thanks to the low profile wireless derailleur
• Chain Stabilising Technology: The low-profile dual spring design creates higher chain tension for better chain wrap and retention
• Designed To Survive: The rear derailleur body boast a wide, well-braced linkage and solid pulleys to minimize debris entry and ensure durability

Di2

Thanks to its lightning-fast, accurate, and reliable shifting performance, Di2 puts riders in complete control and ensures a seamless interface between the cyclist and bike like never before. Creating and continually improving the world's best shifting is a complicated undertaking requiring constant technological advancements. From hardware to software, Shimano Di2 technology is on the cutting edge, striving to deliver the best rider experience possible now and in the future.

Since its first introduction two decades ago, Shimano Di2 technology has evolved to offer the most advanced shifting experience for a wide range of rider types and riding styles including road, city, mountain bike, and gravel.

The Di2 system allows comfort riding by the fusion of Shimano’s traditional mechanical technology and advanced digital technology. The computer-controlled automatic shifting system, the selfadjustable digital suspension for optimum hardness, and three automatic drive modes at your choice. Advanced computer engineering provides a smooth, silent and shockless ride. The Cyber Nexus is characterized by many features including the internal 8-Speed automatic system synchronized with the auto-suspension for quick response. In addition, electric power is supplied from the front hub dynamo to control shifting and suspension realizing an environmentally-friendly system - EcoVision. Shimano will continue to pursue the development of this self-energizing and automatic system.

Features

• Precise and clean wireless shifting with Integrated on-board removable battery (BT-DN320 sold separately)
• A wide link structure, skid-plate design, durable carbon plate and solid pulley add robustness and longevity
• The new Automatic Impact Recovery function instantly returns the derailleur to its original position after impact
• A slimmer, stronger evolution of Shimano’s pioneering chain-stabilizing Shadow concept
• Wireless Di2 paired with HyperGlide+ technology result in smooth, precise and instantaneous shifting
• The new wedge shape of Shimano’s 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 won’t budge even in rough terrain, while remaining completely removable for charging
• The integrated removable on-board battery is protected within the linkage
• Crash recovery function, absorbs impacts and returns to its original position
• Connectivity BLE, ANT private
• Shadow ES features a super low profile skid plate design and optimised slant angle for optimal clearance
• Shadow ES uses a dual spring chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shifting
• The Shadow ES system is also zero maintenance and has no degradation of performance
• Unique structure using two springs has a tighter chain wrap that improves shifting and security with increased spring force by 70%, allowing the chain to mesh firmly with the sprocket
• With the tighter chain wrap skipping is prevented even as the cogs wear
• Compact drive GS mech offers more ground clearance (-23mm) whiles also saving weight
• 13T solid pulleys and decreased derailleur tension prevent high chain tension in low gears
• Full carbon fibre outer pulley cage saves weight while alloy inner cage increases rigidity
• Cold forged wide alloy links and pivot body
• Four fluorine-coated link pin bushings
• Specifically designed to work with 12-Speed drivetrains
• 9-45 tooth compatible GS cage and 10-51 tooth compatible SGS cage

Note: Battery is not included and will need to be purchased separately.