Rear derailleur Shimano XT RD-M8100 1x12-speed

The all-new 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 SHIMANO's new 12-speed cassettes boosts range. For 1x12-speed drivetrain systems.Faster and shockless shiftingLow-profile designWide range 12-speed drivetrain with low sprocket combination -10-51T ONLY (not compatible with 10-45)Decreased 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 terrainSHIMANO SHADOW RD+Shadow RD+ : Less distraction quiet drive train. Rear Derailleur Stabilizer reduces chain slap. Simple solution for chain drop. Lighter and more efficient than roller type chain device. Weight: ~ 284 gCage type: SGS (long)Compatible chain: HG 12-speedFluoric coated link bushings: 4Maximum LOW sprocket: 51TMinimum LOW sprocket: 51TSealed Pulley BearingsPulley Teeth: 13TMaximum Top sprocket: 10TMinimum Top sprocket: 10TTotal capacity: 41T