---
product_id: 300020054
title: "SHIMANO,Black,ERDM3100SGS Alivio Alivio M3100 rear derailleur, 9-speed, Shadow design, SGS long cage"
brand: "shimano"
price: "€ 84.70"
currency: EUR
in_stock: true
reviews_count: 5
category: "Shimano"
url: https://www.desertcart.hr/products/300020054-shimano-black-erdm3100sgs-alivio-alivio-m3100-rear-derailleur-9-speed
store_origin: HR
region: Croatia
---

# 9-speed precision shifting SGS long cage for wide-range gears Durable MTB trail-ready design SHIMANO,Black,ERDM3100SGS Alivio Alivio M3100 rear derailleur, 9-speed, Shadow design, SGS long cage

**Brand:** shimano
**Price:** € 84.70
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift like a pro, ride like a legend.

## Quick Answers

- **What is this?** SHIMANO,Black,ERDM3100SGS Alivio Alivio M3100 rear derailleur, 9-speed, Shadow design, SGS long cage by shimano
- **How much does it cost?** € 84.70 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/300020054-shimano-black-erdm3100sgs-alivio-alivio-m3100-rear-derailleur-9-speed)

## 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

- • **Extended SGS Long Cage:** Maximize your gear range with a cage designed to handle wide-range 9-speed cassettes effortlessly.
- • **Seamless Compatibility:** Optimized for Shimano Alivio M3100 groupsets and 9-speed MTB drivetrains for plug-and-play performance.
- • **Trail-Ready Durability:** Built with Alivio-grade materials to withstand the rigors of everyday mountain biking adventures.
- • **Smooth 9-Speed Shifting:** Experience flawless gear transitions tailored for trail and recreational MTB rides.
- • **Precision Cable Pull Geometry:** Shimano’s engineered design ensures accurate, positive engagement across all sprockets.

## Overview

The Shimano RD-M3100 Alivio SGS 9-Speed Rear Derailleur combines precision engineering and durable construction to deliver smooth, reliable shifting for mountain bikers. Featuring an extended SGS long cage for wide-range gear compatibility and Shimano’s signature cable pull geometry, it ensures consistent performance on trails and recreational rides. Designed specifically for 9-speed MTB drivetrains, this derailleur offers dependable, high-quality shifting that keeps you ahead of the pack.

## Description

The Shimano RD-M3100 Alivio SGS 9-Speed Rear Derailleur delivers reliable, precise gear shifting for trail & recreational mountain bikers running 9-speed drivetrains. The SGS long cage accommodates wide-range cassettes for maximum gear range while Shimano's cable pull geometry ensures accurate, positive sprocket engagement. Alivio-grade durability for dependable everyday MTB riding.

Review: Shimano Alivio RD-M3100 - En orginal Shimano bakväxel som funkar helt perfekt som utbytesväxel
Review: Bien - Muy bueno calidad precio, cambia los comicios muy suave

## Features

- ALIVIO 9-SPEED DERAILLEUR – Reliable Shimano Alivio rear derailleur delivering smooth, consistent 9-speed shifting for trail & recreational MTB.
- SGS LONG CAGE – Extended cage accommodates wide-range 9-speed cassettes for maximum gear range coverage in 1x & 2x MTB drivetrains.
- PRECISE CHAIN MANAGEMENT – Shimano-designed cable pull geometry ensures accurate, positive gear engagement across all 9 cassette sprockets.
- MTB TRAIL COMPATIBLE – Suits Shimano Alivio M3100 9-speed groupsets & compatible 9-speed MTB drivetrains for reliable trail performance.
- DURABLE CONSTRUCTION – Alivio-grade build quality delivers dependable everyday shifting performance for recreational & trail MTB riding.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08CGYD213 |
| Best Sellers Rank | #15,469 in Sporting Goods ( See Top 100 in Sporting Goods ) #5 in Bike Shifters & Parts |
| Brand | SHIMANO |
| Brand Name | SHIMANO |
| Case Material Type | Steel & Aluminum |
| Color | Black |
| Colour | Black |
| Customer Reviews | 4.6 out of 5 stars 672 Reviews |
| Global Trade Identification Number | 04550170621155 |
| Included Components | SHIMANO,Black,ERDM3100SGS Alivio Alivio M3100 |
| Item Dimensions L x W x H | 17L x 11.3W x 10H centimeters |
| Item Type Name | SHIMANO,Black,ERDM3100SGS Alivio Alivio M3100 rear derailleur, 9-speed, Shadow design, SGS long cage |
| Item Weight | 0.2 Kilograms |
| Item weight | 0.2 Kilograms |
| League | Canadian Football League |
| League Name | Canadian Football League |
| Manufacturer | Shimano |
| Manufacturer Part Number | ERDM3100SGS |
| Material | Aluminum |
| Material Type | Aluminum |
| Model Number | C8C086 |
| Mount Type | Shimano Rear Direct Mount |
| Mounting type | Shimano Rear Direct Mount |
| Number of Teeth | 36 |
| UPC | 192790621159 |
| Unit Count | 1 Count |
| Warranty Description | Shimano Standard Warranty |

## Product Details

- **Brand:** SHIMANO
- **Colour:** Black
- **Item weight:** 0.2 Kilograms
- **League:** Canadian Football League
- **Material:** Aluminum

## Images

![SHIMANO,Black,ERDM3100SGS Alivio Alivio M3100 rear derailleur, 9-speed, Shadow design, SGS 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Shimano Alivio RD-M3100
*by H***S on 25 November 2025*

En orginal Shimano bakväxel som funkar helt perfekt som utbytesväxel

### ⭐⭐⭐⭐⭐ Bien
*by L***S on 24 May 2025*

Muy bueno calidad precio, cambia los comicios muy suave

### ⭐⭐⭐⭐ Op tijd bezorgd
*by A***L on 8 September 2025*

Prima

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hr/products/300020054-shimano-black-erdm3100sgs-alivio-alivio-m3100-rear-derailleur-9-speed](https://www.desertcart.hr/products/300020054-shimano-black-erdm3100sgs-alivio-alivio-m3100-rear-derailleur-9-speed)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-20*