Wide link Shadow design Dyna-Sys 10-speed top normal Deore rear derailleurShadow features a super low profile design that reduces the risk of damage from trail side hazardsDirect Mount compatible Rear Derailleur system gives more space around the rear frame dropout resulting in easier rear wheel removal but also allows frame designers to shorten chain stays, increase axel sizes and move suspension pivotsSingle tension spring prevents contact with the chainstay resultingin a silent rideDirect cable routing prevents snagging from any trail side hazardsAlloy and steel construction leads to lower weight without compromising strength and durabilityWide link design increases rigidity and service lifeTop normalreturn spring lends to incredibly intuitive operation when combined with Rapidfire shifters Large 11 tooth pulleys are used for longer lifeTwo fluorine-coated link bushings for low-friction operationDyna-Sys 10-speed compatible onlyCompatible with 32-36T low sprocket