Shimano RD-M5120 Deore Rear Derailleur, 10/11s, Shadow+ SGS Long Cage

Shimano's RD-M5120 Deore rear derailleur delivers reliable shifting across 10 and 11-speed drivetrains. The Shadow+ design keeps the cage tucked close to the cassette, reducing chain slap and improving ground clearance on technical terrain. Long cage geometry accommodates larger sprocket ranges, making it ideal for mixed terrain and gravel setups. Smooth, precise indexing and durable construction ensure consistent performance ride after ride.