Shimano Alivio RD-M3100 Shadow 9-Speed Long Cage MTB Rear Derailleur

Shimano RD-M3100 Rear Derailleur – Alivio 9-Speed MTB / Trekking (SGS Long Cage)

Upgrade your bike’s shifting performance with the dependable Shimano RD-M3100 rear derailleur — designed for 9-speed drivetrains and built with Shimano’s proven SHADOW RD low-profile technology for smoother, quieter, and more stable riding on all terrain.

⭐ Key Features:

• SHIMANO SHADOW RD low-profile design reduces impact risk and keeps the drivetrain quiet.

• 9-Speed compatible, ideal for MTB, trekking, hybrid, and touring bikes.

• Wide gear capacity — supports up to 36T low sprocket and 45T total capacity.

• SGS long cage version — perfect for wide-range cassettes or triple cranksets.

• Smooth and accurate shifting with durable pulleys and low-friction pivots.

• Reliable for daily commuting or off-road use.

Perfect for: Replacing or upgrading your existing 9-speed MTB/Hybrid drivetrain to improve shifting consistency and overall performance.

OEM Condition Notice

These are OEM Shimano Parts, Brand new, Never Installed on Bike, Never used in any way, just NOT in retail packaging.