Shimano Alivio RD-M4000 SGS 9s Speed Mountain Bike Rear Derailleur

This is new, in original box. 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. The Alivio RD-M4000 7/8/9 Speed Rear Derailleur features a wide link design increases durability and precise shifting and advanced light action. Shifting Action : Shadow RD Mount Type : Direct attachment