SHIMANO RD-M591 Deore SGS Rear Derailleur (9-Speed, Long Cage, Black)
Brand: SHIMANO

The Shimano Deore M591 SGS Rear Derailleur features direct cable routing and a strong guide spring to maintain chain tension and eliminate chainstay contact. Top-Normal shifting system is optimized for use with Shimano RapidFire shift levers and provides precise and rapid performance with a light shift effort.

Precise chain movement changes gears smoothly
Direct Mount
Light shift effort
Maximum cassette capacity is 34T