SHIMANO DEORE XT RD-M8100-SGS

Quick and accurate shifting performance for a variety of trail conditions Faster, shockless shifting 12-speed wide-range drivetrain with HYPERGLIDE+ cassette sprocket 10-51T tooth set Quiet drivetrain in all gear positions Reduced in low gears Chain tension with rear derailleur New bumper stopper added to rear derailleur pulley cage Bumper stopper 13T pulley Stable drivetrain even on rough terrain Low profile design Shimano Shadow RD+ 10-51T (12 speed)