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The all-new DEORE XT RD-M8150 12v rear derailleur combines race-proven quality with original Shimano technologies to help you maintain fluidity and focus and choose the best trajectories. The new optimized E-MTB design allows full integration with SHIMANO E-Bike systems and HYPERGLIDE+ drivetrains to offer completely new functionality. This system integration ensures innovative features such as FREE SHIFT. The result is the simplest and purest E-MTB experience achievable only by combining the technologies of drivetrain, e-bike system components, and electronic shifting intelligence.