Shimano Zee RD-M640-SS DH Rear Derailleur

· 10-speed compatible
· Shimano Shadow RD+ – When the switch is in the “on” position, it increases the rear derailleur spring tension and reduces chain movement for a quieter and more stable ride. The “off” position facilitates mounting and dismounting the rear wheel.
· Top Normal (designed for Rapidfire levers)
· 3 Teflon coated connecting pins
· 11-tooth derailleur wheels
· for Shimano 10-speed HG-X chains
· max. sprocket size: 23 – 28 teeth
· total capacity: 17 teeth
· weight: approx. 250 g