Wide link Shadow design top normal Deore rear derailleur Shadow features a super low profile design that reduces the risk of damage from trail side hazards Single tension spring prevents contact with the chainstay resulting in a silent ride Direct cable routing prevents snagging from any trail side hazards Alloy and steel construction leads to lower weight without compromising strength and durability Wide link design increases rigidity and service life Top normal return spring lends to incredibly intuitive operation when combined with Rapidfire shifters Large 11 tooth pulleys are used for longer life Two fluorine-coated link bushings for low-friction operation 8- and 9-speed compatible Compatible with 32-36T low sprocket Average weight 286 grams