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 & steel construction leads to lower weight without compromising strength & durability Wide link design increases rigidity & 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- & 9-speed compatible Compatible with 32-36T low sprocket Average weight 286 grams