Description
SHIMANO Alivio RD-M3100 SGS 9-Speed Rear Derailleur
Upgrade your ride with the SHIMANO Alivio RD-M3100 SGS 9-Speed Rear Derailleur. This robust component offers crisp, smooth, and reliable shifting for modern trail riding. Its SHIMANO SHADOW RD low-profile design protects against trail hazards, reducing damage and chain slap for a quieter, more stable ride. The SGS long cage boasts a 45T total capacity, compatible with wide-range 9-speed cassettes up to 36T, perfect for conquering steep climbs. Easy direct attachment mounting and an integrated barrel adjuster ensure straightforward installation and precise on-the-trail adjustments. Experience dependable performance and focus on the ride.
Engineered for the demands of MTB cycling, the Alivio RD-M3100 brings premium technology to a wider audience of trail enthusiasts. The centerpiece of its design is the innovative SHIMANO SHADOW RD technology. This low-profile concept tucks the derailleur closer to the frame and under the cassette, significantly reducing its exposure to rocks, roots, and other obstacles that can cause catastrophic damage on technical singletrack. This not only enhances durability but also provides a more stable chain path, which minimizes chain bounce and slap, resulting in a quieter drivetrain and more confident power transfer over rough terrain.
Versatility is at the core of the RD-M3100´s performance. The SGS long cage is specifically designed to manage wide-range gearing, offering a massive 45T total capacity. This allows you to run modern 9-speed cassette configurations with a large low sprocket up to 36 teeth. For the rider, this translates directly into the ability to spin up the steepest climbs without running out of gears, making it an ideal upgrade for tackling varied and challenging landscapes. Whether you´re grinding up a fire road or navigating a technical ascent, the RD-M3100 ensures you have the right gear for the moment, delivered with SHIMANO´s signature smooth and precise action. This consistent shifting performance allows you to anticipate terrain changes and shift flawlessly under load, maintaining momentum and control when it matters most.
Key Features:
* SHIMANO SHADOW RD Technology: Delivers consistent MTB shifting performance with enhanced stability and a super low-profile design to avoid trail damage.
* SGS Long Cage: Provides wide gearing compatibility and efficient chain management for 1×9, 2×9, or 3×9-speed drivetrain systems.
* Wide Compatibility: Optimized for 9-speed drivetrains and compatible with low sprockets up to 36T.
* Smooth and Light Shifting Operation: Precision engineering ensures effortless and reliable gear changes on every ride.
* Direct Attachment Mount: Allows for simple and secure installation on a wide variety of modern mountain bike frames.
* Integrated Barrel Adjuster: Enables quick, easy, and tool-free fine-tuning of cable tension for perfect indexing on the go.
Technical Specifications:
* Speeds: 9-speed
* Mount: Direct Attachment (Conventional)
* Total Capacity: 45T
* Max. Low Sprocket: 36T
* Min. Low Sprocket: 32T
* Max. High Sprocket: 12T
* Min. High Sprocket: 11T
* Max. Front Difference: 22T
* Pulley Teeth: 11T
Attributes:
* Medium, MTB Cycling






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