Shimano Alivio RD-M3100 Shadow 9-Speed Rear Derailleur
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The SHIMANO ALIVIO M3100 rear derailleur delivers a low profile design that lets you ride aggressively with fewer interruptions thanks to its SHIMANO SHADOW design.
Wide Range Gearing
Smooth, silent performance
Shimano Shadow Design: chain stabiliser system
Adjustment barrel: keep cable tension just right, making gear adjustment simple
Total capacity: 45T
Max. low sprocket: 36T
Mfr Claimed Weight