Deore XT rear derailleur delivers reliable and precise shifting with a stiff and lightweight open designAll-alloy construction leads to lower weight without compromising strength and durabilityFour fluorine-coated link pin bushings make this one of the slickest shifting derailleurs on the trailsHigh rigidity wide outer link braces the pulley body to increase pivot joint rigidityMega9 compatible for use with 9-speed drivetrainsDurable sealed bearing tension pulley for low friction and smooth running of the drivetrainTop normal spring uses the spring to select higher gears, best suited to use with Rapidfire shiftersCan be combined with Dual Control leversRubber bumper reduces noise when used on non-conventional frame designsWeight: 239 grams SGS