Shimano 2013 Alivio 9-Speed Mountain Bicycle Rear Derailleur - RD-M430
9 speed compatible. Double Servo-Panta technology for smooth & light action shifting performance. Wide Link structure for more durability, rigidity and precise shifting. 25 grams lighter than RD-M410 version. Compact design using 11 tooth pulleys. Low profile design (5mm less than RD-M410).