---
product_id: 335795512
title: "Shimano GRX RD-RX400 GRX 10-Speed Rear derailleur, Shadow+, for Double, Black"
brand: "shimano"
price: "KD 29.94"
currency: KWD
in_stock: true
reviews_count: 7
category: "Shimano"
url: https://www.desertcart.com.kw/products/335795512-shimano-grx-rd-rx400-grx-10-speed-rear-derailleur-shadow
store_origin: KW
region: Kuwait
---

# smooth shifting on rough terrain 10-speed precision adjustable chain stabilizer Shimano GRX RD-RX400 GRX 10-Speed Rear derailleur, Shadow+, for Double, Black

**Brand:** shimano
**Price:** KD 29.94
**Availability:** ✅ In Stock

## Summary

> ⚡ Shift into adventure mode with Shimano GRX – where precision meets grit!

## Quick Answers

- **What is this?** Shimano GRX RD-RX400 GRX 10-Speed Rear derailleur, Shadow+, for Double, Black by shimano
- **How much does it cost?** KD 29.94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/335795512-shimano-grx-rd-rx400-grx-10-speed-rear-derailleur-shadow)

## 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

- • **Shadow+ Technology:** Low-profile design reduces chain slap and protects your derailleur on rugged trails.
- • **Adjustable Chain Stabilizer:** Keep your chain locked in place, preventing drops even on the bumpiest rides.
- • **Durable Build for Endurance:** Crafted to withstand thousands of miles, ensuring reliability on every adventure.
- • **Precision 10-Speed Shifting:** Experience flawless gear changes tailored for gravel and mixed terrain rides.
- • **Quick Installation & Compatibility:** Designed specifically for Shimano GRX double cranksets for seamless upgrades.

## Overview

The Shimano GRX RD-RX400 is a 10-speed rear derailleur engineered for gravel and mixed terrain cycling. Featuring Shadow+ technology and an adjustable chain stabilizer, it delivers smooth, reliable shifting while minimizing chain bounce. Built for durability and optimized for Shimano GRX double cranksets, this derailleur ensures consistent performance on challenging rides.

## Description

Shimano GRX RD-RX400 GRX 10-Speed Rear derailleur, Shadow+, for Double, Black

Review: Know the replacement brand - Not applicable with other brands of derailleurs Waiting on refund after returning
Review: When you need to get on the bike and you need it fast...... - While riding my new gravel bike, I happened to notice that the cranks would not roll backwards. One trip to the bike shop, after almost 1,015 miles later, I noticed my chain was literally sawing through the cage of my rear derailleur. I ordered this device to replace what I had lost. It arrived on time, the rear derailleur was in great condition, (new). When you want to get up and running this is the part that you can count on. Great.

## Features

- Material: Other
- Quiet and smooth shifting system for uneven terrain
- Package dimensions: 9.8 L x 17.6 H x 12.6 W (Zm)
- Adjustable chain stabilizer prevents the chain from jumping out
- Smooth and reliable shifting in changing ground conditions

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07RVXQWKV |
| Best Sellers Rank | #694,231 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #687 in Rear Bike Derailleurs |
| Brand Name | SHIMANO |
| Customer Reviews | 4.4 4.4 out of 5 stars (83) |
| Date First Available | May 25, 2019 |
| Global Trade Identification Number | 04550170448899 |
| Included Components | Bike Parts |
| Item Dimensions LxWxH | 5.91 x 5.91 x 3.94 inches |
| Item Package Dimensions L x W x H | 7.4 x 4.92 x 3.74 inches |
| Manufacturer | Shimano GRX |
| Model Name | C8C075 |
| Model Year | 2019 |
| Number of Items | 1 |
| Package Weight | 0.46 Kilograms |
| Part Number | IRDRX400 |
| Size | SGS - long |
| Suggested Users | unisex |
| Warranty Description | 2 Year Manufacturer |

## Product Details

- **Brand:** SHIMANO
- **Color:** Black
- **Item Weight:** 0.02 Ounces
- **Material:** other
- **Mounting Type:** Braze-On Mount

## Images

![Shimano GRX RD-RX400 GRX 10-Speed Rear derailleur, Shadow+, for Double, Black - Image 1](https://m.media-amazon.com/images/I/518yQjzdrsS.jpg)

## Customer Reviews

### ⭐ Know the replacement brand
*by A***R on November 29, 2024*

Not applicable with other brands of derailleurs Waiting on refund after returning

### ⭐⭐⭐⭐⭐ When you need to get on the bike and you need it fast......
*by R***. on September 22, 2022*

While riding my new gravel bike, I happened to notice that the cranks would not roll backwards. One trip to the bike shop, after almost 1,015 miles later, I noticed my chain was literally sawing through the cage of my rear derailleur. I ordered this device to replace what I had lost. It arrived on time, the rear derailleur was in great condition, (new). When you want to get up and running this is the part that you can count on. Great.

### ⭐⭐⭐⭐⭐ Review
*by M***O on October 18, 2025*

Bought as a replacement for the same model after I damaged it beyond repair. Worked just like the original as you'd expect.

## Frequently Bought Together

- Shimano GRX RD-RX400 GRX 10-Speed Rear derailleur, Shadow+, for Double, Black
- Shimano HG50 10 Speed Mountain Bike Cassette 11-36T
- SHIMANO CN-HG95 10-speed HG-X chain - 116 links

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**Shop now:** [https://www.desertcart.com.kw/products/335795512-shimano-grx-rd-rx400-grx-10-speed-rear-derailleur-shadow](https://www.desertcart.com.kw/products/335795512-shimano-grx-rd-rx400-grx-10-speed-rear-derailleur-shadow)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-03-23*