RD-M3100-SGS - SHIMANO ALIVIO - Rear Derailleur - SHIMANO SHADOW RD - 9-speedThe SHIMANO ALIVIO M3100 rear derailleur delivers a low profile design that lets you ride aggressively with fewer interruptions thanks to its SHIMANO SHADOW design.Low-profile designTotal capacity: 45TMax. low sprocket: 36TAdjustment barrel In stock |