---
product_id: 463153454
title: "Deore Rd-M5120 Rear Derailleur"
brand: "shimano"
price: "₩153857"
currency: KRW
in_stock: true
url: https://www.desertcart.kr/products/463153454-deore-rd-m5120-rear-derailleur
store_origin: KR
region: South Korea
---

# Long SGS cage supports up to 46T sprockets Shadow RD+ tech for ultra-smooth shifting Low-profile design minimizes trail damage Deore Rd-M5120 Rear Derailleur

**Brand:** shimano
**Price:** ₩153857
**Availability:** ✅ In Stock

## Summary

> 🚵‍♂️ Shift Like a Pro, Ride Like You Own the Trail

## Quick Answers

- **What is this?** Deore Rd-M5120 Rear Derailleur by shimano
- **How much does it cost?** ₩153857 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/463153454-deore-rd-m5120-rear-derailleur)

## 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

- • **Cross-Compatible Power:** Works seamlessly with both HG-X 10 and 11-speed drivetrains for maximum compatibility.
- • **Versatile Gear Mastery:** Supports 1x10 and 2x setups with up to 46T sprockets for ultimate drivetrain flexibility.
- • **All-Terrain Reliability:** Consistent shifting performance across rugged trails and unpredictable conditions.
- • **Trail-Proof Compactness:** Low-profile design keeps your derailleur safe from rocks and rough terrain impacts.
- • **Silent Shifts, Zero Slap:** Shadow RD+ tech stabilizes your chain for whisper-quiet, precise gear changes.

## Overview

The Shimano Deore RD-M5120 Rear Derailleur features advanced Shadow RD+ technology to reduce chain noise and slap, a low-profile design to protect against trail damage, and a long SGS cage that supports up to 46T sprockets. Compatible with both 10 and 11-speed HG-X drivetrains, it delivers reliable, smooth shifting performance for demanding off-road cycling.

## Description

Deore Rd-M5120 Rear Derailleur

## Features

- SHADOW RD+ TECHNOLOGY – Stabilizes chain to reduce noise, slap, & drop for quiet, smooth shifting
- LOW‑PROFILE DESIGN – Keeps derailleur compact to minimize damage from rocks & trail impacts
- LONG SGS CAGE CAPACITY – Supports up to 46T sprockets on 1×10 setups & 42T on 2× configurations
- COMPATIBLE CHAIN SYSTEM – Works with both HG‑X 11‑speed and 10‑speed drivetrains for versatility
- CONSISTENT TRAIL SHIFTING – Delivers reliable performance over rugged terrain and varied conditions

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product dimensions | 20.3L x 12.7W x 10.2H centimeters |
| Manufacturer | Shimano Inc. |
| UPC | 192790618548 |
| Age Range | Adult |
| Color | Black |
| Size | Standard |
| Weight | 1 Pounds |
| Material Type | Aluminum |
| Number of Items | 1 |
| Sport | Cycling |
| Included Components | 1 x Shimano Deore RD-M5120-SGS 10/11 Speed Rear Derailleur, Black |
| Batteries Included? | No |
| Department | mens |
| Item model number | Shimano |
| ASIN | B089KDV5C7 |

## Product Details

- **Brand:** SHIMANO
- **Colour:** Black
- **Material:** Aluminum
- **Item weight:** 203 Grams
- **Mounting type:** Braze-On Mount

## Images

![Deore Rd-M5120 Rear Derailleur - Image 1](https://m.media-amazon.com/images/I/61a1EK2nXzL._AC_UL320_.jpg)
![Deore Rd-M5120 Rear Derailleur - Image 2](https://m.media-amazon.com/images/I/61a1EK2nXzL._AC_UL480_FMwebp_QL65_.jpg)
![Deore Rd-M5120 Rear Derailleur - Image 3](https://m.media-amazon.com/images/I/61a1EK2nXzL._AC_UL640_FMwebp_QL65_.jpg)
![Deore Rd-M5120 Rear Derailleur - Image 4](https://m.media-amazon.com/images/I/61a1EK2nXzL._AC_UL800_FMwebp_QL65_.jpg)
![Deore Rd-M5120 Rear Derailleur - Image 5](https://m.media-amazon.com/images/I/61a1EK2nXzL._AC_UL960_FMwebp_QL65_.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: I have an older mtn bike with a 10speed deore. Can I run this derailleur with my current shimano 10sp shifter? The shimano deore sl-m610?**
A: I believe that Shimano's 10 spd mtn shifters are pretty much the same, regardless of the year. I'm using a 10 spd Zee shifter with it and it works fine.

**Q: will this work on a 10 s road bike with 11x42 (rear)?**
A: I honestly don't know, but it is designed for use with 42-46T cassettes as long as the shifter has the same pull ratio, theoretically it will work with both 10- and 11-speed shifters. Google says a mtb derailleur should work.

**Q: Can i use this with my 9 speed shifter and 9 speed cassette?**
A: Not out of the box. When Shimano went to 10 speed, they altered the shifter/derailleur pull. JTek may make a pulley that will allow you to do so, but you'll need to visit their website and pore through the compatibility charts there. If you find one, then you'll need to find a retailer that carries it. Honestly, it would be easier just to find a 9 speed derailleur unless you already have this derailleur and need to find a solution to get it to work.

**Q: Will this fit a 11t-46t 10 speed cassette?**
A: Yes it will. I just did mine

## Frequently Bought Together

- Shimano Deore Rd-M5120 Rear Derailleur
- SHIMANO SL-M6000 Deore Shift Lever, Band-on, 10-Speed, Right Hand
- Shimano Deore CS-M4100-10 Cassette - 10-Speed, 11-46t, Silver

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-07*