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

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.

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