Shimano xt m772 shadow 9 speed rear mechdeore xt shadow rear derailleur delivers reliable and precise shifting with a stiff and lightweight open design featuresshadow features a super low profile design that reduces the risk of damage from trail side hazardssingle tension spring prevents contact with the chainstay resulting in a silent ridedirect cable routing prevents snagging from any trail side hazardsall alloy construction leads to lower weight without compromising strength and durabilityfo