Shimano Alivio RD-M4000 9 Speed Rear Derailleur

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.

Specifications: 

• Alivio RD-M4000  7/8/9 Speed Rear Derailleur
• Features: Wide link design increases durability and precise shifting.
• Advanced light action.
• Speed: 9 Speed
• Cassette Compatibility: Minimum sprocket size: 11 - 12 teeth,  maximum sprocket size: 32 - 36 teeth
• Maximum Sprocket: 36T Chain Wrap
• Weight: 252 grams