---
product_id: 384452581
title: "Mountain Bike Replacement Parts,RD-M390 Bicycle Derailleurs,7 8 9 Speed Rear Bike Derailleurs"
brand: "cydzsw"
price: "€ 52.08"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/384452581-mountain-bike-replacement-parts-rd-m390-bicycle-derailleurs-7-8
store_origin: FI
region: Finland
---

# Easy Installation 7-9 Speed Compatibility Lightweight at 360g Mountain Bike Replacement Parts,RD-M390 Bicycle Derailleurs,7 8 9 Speed Rear Bike Derailleurs

**Brand:** cydzsw
**Price:** € 52.08
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Elevate Your Ride with RD-M390 Derailleurs!

## Quick Answers

- **What is this?** Mountain Bike Replacement Parts,RD-M390 Bicycle Derailleurs,7 8 9 Speed Rear Bike Derailleurs by cydzsw
- **How much does it cost?** € 52.08 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/384452581-mountain-bike-replacement-parts-rd-m390-bicycle-derailleurs-7-8)

## Best For

- cydzsw enthusiasts

## Why This Product

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

## Key Features

- • **Durable Design:** Crafted from robust aluminum alloy for long-lasting performance.
- • **Seamless Shifting:** Experience smooth gear transitions with the RD-M390.
- • **Compact Dimensions:** Perfectly sized at 5.7*3.3*4.1 inches for any bike setup.
- • **Lightweight Performance:** Weighs only 360g, enhancing your ride without the bulk.
- • **User-Friendly Installation:** Get back on the trail quickly with simple installation.

## Overview

The RD-M390 Bicycle Derailleurs are designed for 7, 8, and 9-speed bikes, offering a lightweight yet durable solution for seamless gear shifting. Made from aluminum alloy, these derailleurs are easy to install and perfectly sized for a variety of bike setups.

## Description

Mountain Bike Replacement Parts,RD-M390 Bicycle Derailleurs,7 8 9 Speed Rear Bike Derailleurs

## Features

- RD-M390 Bicycle Derailleurs.
- Simple installation.
- Material: aluminum alloy.
- Weight: 360g.
- Size: 5.7*3.3*4.1inch.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 4.1"L x 3.3"W x 5.7"H |
| Manufacturer | CYDZSW |
| UPC | 744933369901 |
| Item Package Dimensions L x W x H | 6.1 x 3.39 x 3.03 inches |
| Package Weight | 0.69 Kilograms |
| Item Dimensions  LxWxH | 4.1 x 3.3 x 5.7 inches |
| Brand Name | CYDZSW |
| Model Name | Rear Bike Derailleur-001 |
| Part Number | C-RD |

## Product Details

- **Brand:** CYDZSW
- **Color:** Black
- **Item Weight:** 360 Grams
- **Case Material:** Aluminum
- **Mounting Type:** Braze-On Mount

## Images

![Mountain Bike Replacement Parts,RD-M390 Bicycle Derailleurs,7 8 9 Speed Rear Bike Derailleurs - Image 1](https://m.media-amazon.com/images/I/51apkPmsdmL.jpg)
![Mountain Bike Replacement Parts,RD-M390 Bicycle Derailleurs,7 8 9 Speed Rear Bike Derailleurs - Image 2](https://m.media-amazon.com/images/I/41SbDQhQ1BL.jpg)
![Mountain Bike Replacement Parts,RD-M390 Bicycle Derailleurs,7 8 9 Speed Rear Bike Derailleurs - Image 3](https://m.media-amazon.com/images/I/51xXa+y2HcL.jpg)
![Mountain Bike Replacement Parts,RD-M390 Bicycle Derailleurs,7 8 9 Speed Rear Bike Derailleurs - Image 4](https://m.media-amazon.com/images/I/61SmH8r721L.jpg)
![Mountain Bike Replacement Parts,RD-M390 Bicycle Derailleurs,7 8 9 Speed Rear Bike Derailleurs - Image 5](https://m.media-amazon.com/images/I/61XpYzYYF+L.jpg)

## Frequently Bought Together

- CYDZSW Mountain Bike Replacement Parts,RD-M390 Bicycle Derailleurs,7 8 9 Speed Rear Bike Derailleurs
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**Shop now:** [https://www.desertcart.fi/products/384452581-mountain-bike-replacement-parts-rd-m390-bicycle-derailleurs-7-8](https://www.desertcart.fi/products/384452581-mountain-bike-replacement-parts-rd-m390-bicycle-derailleurs-7-8)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-08*