---
product_id: 351880891
title: "Alivio RD-M3100 Rear Derailleur - 9-Speed, Long Cage"
brand: "shimano"
price: "23299 som"
currency: KGS
in_stock: true
url: https://www.desertcart.kg/products/351880891-alivio-rd-m3100-rear-derailleur-9-speed-long-cage
store_origin: KG
region: Kyrgyzstan
---

# 45T chain wrap capacity 9-speed precision shifting Shadow RD tech for derailleur protection Alivio RD-M3100 Rear Derailleur - 9-Speed, Long Cage

**Brand:** shimano
**Price:** 23299 som
**Availability:** ✅ In Stock

## Summary

> ⚡ Shift like a pro, conquer every trail.

## Quick Answers

- **What is this?** Alivio RD-M3100 Rear Derailleur - 9-Speed, Long Cage by shimano
- **How much does it cost?** 23299 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/351880891-alivio-rd-m3100-rear-derailleur-9-speed-long-cage)

## Best For

- shimano enthusiasts

## Why This Product

- Trusted shimano brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long Cage Capacity:** Handles up to 45 teeth for versatile gearing on steep climbs and fast descents.
- • **Lightweight & Compact:** At just 0.4 kg and a sleek 15 cm profile, it’s built for speed without bulk.
- • **Direct Mount Stability:** Shimano Rear Direct Mount ensures a secure fit and enhanced drivetrain performance.
- • **Trail-Ready Durability:** Shadow RD tech keeps your derailleur safe from rocks and roots, so you never miss a beat on rugged trails.
- • **Smooth 9-Speed Shifting:** Experience crisp, reliable gear changes that keep your ride fluid and efficient.

## Overview

The Shimano Alivio RD-M3100 Rear Derailleur is a 9-speed, long cage component featuring Shadow RD technology for low-profile protection against trail obstacles. With a 45-tooth chain wrap capacity and Shimano’s direct mount system, it delivers reliable, smooth shifting and durability for serious mountain biking.

## Description

SHIMANO Alivio RD-M3100 Rear Derailleur - 9-Speed, Long Cage

## Features

- The Shimano Alivio RD-M3100 Rear Derailleur features Shadow RD technology to keep the derailleur safe from trail obstacles.
- Super low profile Shadow RD technology
- Largest Cog: 36 Drivetrain Speeds: 9 Cage Length: Long
- Chain Wrap Capacity (teeth): 45 teeth
- Rear Derailleur Mount Type: Shimano Rear Direct Mount , 10x1 Standard

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Number of Teeth | 45 |
| Manufacturer | Shimano |
| UPC | 192790621159 |
| Batteries Included | No |
| Length | 15 Centimeters |
| Width | 15 Centimeters |
| Height | 10 Centimeters |
| Weight | 0.4 Kilograms |

## Product Details

- **Brand:** SHIMANO
- **Colour:** Black
- **Item Weight:** 200 Grams
- **Case Material Type:** Aluminium
- **Mounting Type:** Clamp-On Mount

## Images

![Alivio RD-M3100 Rear Derailleur - 9-Speed, Long Cage - Image 1](https://m.media-amazon.com/images/I/51x63EFYbSL.jpg)

## Questions & Answers

**Q: sirve para 2x9 de 11-40?**
A: Trabaja bien para 3*9

**Q: Is this compatible for 8 speed?**
A: Not perfectly - the m3100 model is really meant for 9 speed

**Q: Will this replace the stx rc on a Trek 7300 8 speed?**
A: Shimano's Compatibility charts won't show this "9-speed" derailleur as compatible with 8-speed components, but it should work just fine. Shimano 8-speed shifters will work. This RD can handle larger cogs than were common in the 8-speed era, up to 36t largest cog, but assuming you have 11-32 it'll work. I have an stx rc RD on one of my bikes, and wouldn't hesitate to try this as a replacement.

**Q: Does it come with the hanger bolt?**
A: Hi - It does not.

## Frequently Bought Together

- Shimano,Black,ERDM3100SGS Alivio Alivio M3100 Rear derailleur, 9-Speed, Shadow Design, SGS Long cage
- SHIMANO Alivio SL-M3100 Alivio Shift Lever, 9-Speed, Band on, Right Hand,Black

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**Shop now:** [https://www.desertcart.kg/products/351880891-alivio-rd-m3100-rear-derailleur-9-speed-long-cage](https://www.desertcart.kg/products/351880891-alivio-rd-m3100-rear-derailleur-9-speed-long-cage)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-03-06*