Forged for the rowdiest descents and the steepest climbs, the all-new wireless Shimano Deore XT Di2 RD-M8250-SGS long-cage derailleur pairs seamlessly with the 10-51T M8200 cassette to deliver massive range and bulletproof reliability. Engineered to thrive in the strike zone, it utilizes an impact-deflecting wedge profile and Shimano's ingenious Automatic Impact Recovery system, which instantly resets the mechanism after a brutal rock strike. Shielded by covered pulleys to reject trail debris, this derailleur simply shrugs off heavy abuse while maintaining the lightning-fast, ultra-precise electronic shifting that Di2 is legendary for.
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HYPERGLIDE+Ā drivetrain system enables smooth, quick, quiet and shockless shifting in both directions - no more *thoonk* when dropping the chain to smaller sprockets.
- Faster shifting -Ā gear change time reduced by ~33% vs. HG drivetrains.
- Less shifting shock means smoother, more efficient pedaling when it's needed most.
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SHIMANO SHADOW ES
- 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 Impact Recovery that returns to its original position after impact.
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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.
- Reduced chain tension in low gear chainĀ position (on large sprocket) ensures a silent drivetrain in all gears.
- Hidden away, low-profile design helps avoid derailleur damage.
- Features a larger, 13T pulley with a new bumper to help further dampen any chain sound.
- Bumper structure at rear derailleur pulley cage reduces impact shock by absorbing chain impact on aggressive terrain.
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Features:
- Robust Design: A wide link structure, skid-plate design, durable aluminum plate and solid pulley add robustness and longevity.
- RD Protection Function: The new Automatic Impact Recovery function instantly returns the derailleur to its original position after impact.
- SHIMANO SHADOW ES: A slimmer, stronger evolution of SHIMANO's pioneering chain-stabilizing SHADOW RD+ concept.
- Precise & Clean Wireless Shifting: Ultra-fast shifting and a no-sacrifice 500% gear range.
- Protected Battery: Tucked safely inside an enclosed space, the battery won't budge even in rough terrain, while remaining easily removable for charging.
- Covered Pulleys/Cage: The solid pulley and shielded pulley teeth prevent trail debris from jamming up your flow.
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RD-M8250-SGS (long cage)
SHIMANO SHADOW ES
1x12s (10T-51T)
Sealed Pulley Bearings
Note: Battery and charger sold separately