Description
The Shimano Alivio 9-speed rear derailleur (model RD-M3100) is a durable, high-performance component designed for mountain bikes and trekking bikes, offering reliable and smooth shifting for 9-speed drivetrains. It features a low-profile “SHIMANO SHADOW RD” design to prevent snags and damage on trails, a wide gear range with a 45T total capacity, and components like fluorine-coated link bushings and 11-tooth pulleys for smooth, quiet operation and reduced wear.
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Durable & Reliable:
Built to withstand the rigors of off-road riding with a robust construction featuring steel and aluminum components.
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SHIMANO SHADOW Design:
The low-profile body minimizes the risk of snagging on trail obstacles, enhancing durability and clearance.
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Smooth & Precise Shifting:
Equipped with advanced light action and low-friction fluorine-coated link bushings for smooth gear changes.
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Wide Gear Range:
Compatible with 9-speed drivetrains and supports large cassettes with a maximum low rear sprocket of 36T, for a total capacity of 45 teeth.
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Reduced Wear:
11-tooth pulleys with alternate chain-link contact help to smooth pedaling and reduce wear.
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Versatile:
Ideal for all-terrain, cross-country, mountain biking, and city/touring applications, suitable for riders of all levels.
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Convenient:Includes a tension adjuster for easy cable maintenance.










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