The strong, silent type. The Shimano Alivio RD-M4000 SGS rear derailleur is designed for aggressive riding. With its super low profile and single-tension construction, it does not hit the chainstay in rough riding conditions. It’s smooth and quiet, featuring Shadow Rd technology for less trouble.
Features: Wide link design increases durability and precise shifting.
Advanced light action.
Speed: 9 Speed
Minimum sprocket size: 11 – 12 teeth, Maximum sprocket size: 32 – 36 teeth
Maximum Sprocket: 36T Chain Wrap
Weight: 252 grams