Description

Ride aggressively with fewer interruptions using the Shimano Alivio M3100-SGS 9-speed rear derailleur. Its low-profile design and Shadow RD technology reduce chain drop, slap and noise.

Features

• Low-profile Shadow RD system features a chain stabilizer that can be switched on or off to match terrain, reducing chain slap for a quieter ride and better chain retention
• Low-profile design avoids damage from rocks
• 45-tooth total capacity with 36-tooth maximum low sprocket size
• Adjustment barrel lets you dial your shifting performance