The Shimano Alivio M3100 rear derailleur delivers a low-profile design that lets you ride aggressively with fewer interruptions thanks to Shimano’s patented Shadow design. Because of its low profile and single tension construction, the derailleur does not hit the chain stay in rough riding conditions. The result is smooth and silent performance.

Features:

• Low-profile design
• Adjustment barrel
• Total capacity: 45T
• Max front difference: 22T
• Low sprocket: Min 32T / Max: 36T
• Top sprocket: Min 11T / Max: 12T