The Shimano Alivio RD-M3100-SGS Rear Derailleur is a 9-speed, SHIMANO SHADOW design rear derailleur optimized for mountain and trail riding. Its low-profile construction keeps the derailleur tucked close to the frame, reducing the risk of impacts and allowing riders to ride aggressively with minimal interruptions.

With a total capacity of 45T and compatibility with cassettes up to 36T low sprockets, it provides smooth and reliable shifting across a wide range of gears. Features like fluoric-coated link bushings, sunken pulley bolts, hollow B-axle, and adjustment barrel enhance durability, precision, and ease of maintenance, making it ideal for off-road and recreational MTB use.

Key Features:

• Model: Shimano Alivio RD-M3100-SGS

• Series: Shimano Alivio M3100

• Speed Compatibility: 9-Speed

• Technology: SHIMANO SHADOW RD, low-profile design

• Mount Type: Direct attachment (Conventional)

• Total Capacity: 45T

• Max Front Difference: 22T

• Rear Sprocket Range: 11–36T

• Pulley System: 11T teeth, sunken pulley bolts, fluoric-coated link bushings

• B-Axle: Hollow axle for durability

• Features: Adjustment barrel for precise tuning

• Reliable and durable rear derailleur for MTB riders seeking smooth 9-speed shifting with low-profile protection