SHIMANO DEORE XT Rear Derailleur SHIMANO SHADOW RD 1x12speedThe allnew SHIMANO DEORE XT M8100 series of derailleurs brings a new level of drivetrain silence thank to decreased tension in the low gear position and an added bumper on the pulley cage Larger 13T pulleys increase efficiency and chain management while compatibility with SHIMANOs new 12speed cassettes boosts range KEY FEATURES Faster and shockless shiftingLowprofile designWide range 12speed drivetrain with low sprocket combination 1051TDecreased rear derailleur and chain tension in low gearNew bumper added to rear derailleur pulley cageBigger 13T pulleyFast and precise shifting performance optimized to take on any trailSilent drivetrain in all gear positionsStable drivetrain on rough terrain

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