Shimano Rear Derailleur Deore

Shimano Rear Derailleur Deore - RD-M591 Features: Wide link top normal Deore rear derailleur Wide link design increases rigidity and service life Top normal return spring lends to incredibly intuitive operation when combined with Rapidfire shifters Alloy and steel construction leads to lower weight without compromising strength and durability Large 11 tooth pulleys are used for longer life Two fluorine-coated link bushings for low-friction operation 8- and 9-speed compatible Compatiblewith 28-34T low sprocket Average weight 299 grams