Shimano Deore RD-M6250 Di2 12-Speed Rear Derailleur

Shimano Deore M6250 Shadow ES 12-Speed wireless rear derailleur for the ultimate in shifting performance and durability.

Pairing the new Deore M6250 long-cage derailleur with a standard 10-51T cassette gives all types of riders the range and robustness to tackle every trail on the mountain at a more approachable cost. With built-in Automatic Impact Recovery, an impact-deflecting wedge shape, steel plate, and solid pulley, this derailleur stands up to harsh trail impacts, while retaining the precise shifting qualities for which Di2 is known. Other features include integrated on-board battery that's protected by the linkage and easily removable for recharging and connectivity with cycling computers and other third-party devices.

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 self adjustable 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)
• 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
• 13T solid pulleys and decreased derailleur tension prevent high chain tension in low gears
• Dependable steel pulley cages
• Cold forged wide alloy links and pivot body
• Fluorine-coated link pin bushings
• Specifically designed to work with 12-Speed drivetrains
• 10-51 tooth compatible SGS cage

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