---
product_id: 568917316
title: "SHIMANOGrx Rx820 12-Speed Rear Derailleur Black, 2X12-Speed"
brand: "shimano"
price: "1469 Lei"
currency: RON
in_stock: true
url: https://www.desertcart.ro/products/568917316-shimanogrx-rx820-12-speed-rear-derailleur-black-2x12-speed
store_origin: RO
region: Romania
---

# Silent, low-profile design 12-speed precision shifting Adjustable chain stabilizer SHIMANOGrx Rx820 12-Speed Rear Derailleur Black, 2X12-Speed

**Brand:** shimano
**Price:** 1469 Lei
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift into the future of gravel riding — silent, smooth, unstoppable.

## Quick Answers

- **What is this?** SHIMANOGrx Rx820 12-Speed Rear Derailleur Black, 2X12-Speed by shimano
- **How much does it cost?** 1469 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/568917316-shimanogrx-rx820-12-speed-rear-derailleur-black-2x12-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

- • **Chain Drop? Not Here.:** Adjustable chain stabilizer keeps your drivetrain locked in place, preventing drops and enhancing confidence on rough trails.
- • **Sleek Shadow RD+ Design:** Low-profile silhouette reduces snagging and keeps your bike looking sharp while delivering pro-level performance.
- • **Whisper-Quiet Performance:** Ride distraction-free thanks to the innovative Quiet and Secure tech that minimizes chain noise and slap.
- • **Terrain-Adaptive Stability:** ON/OFF stabilizer switch lets you customize chain tension for smooth, reliable shifting on any surface.
- • **Effortless 12-Speed Mastery:** Experience flawless gear changes with Shimano’s precise 12-speed compatibility, engineered for the ultimate gravel ride.

## Overview

The Shimano GRX RX820 12-Speed Rear Derailleur is a cutting-edge component designed for gravel enthusiasts seeking quiet, stable, and precise shifting. Featuring Shimano’s Shadow RD+ technology and an adjustable chain stabilizer with an ON/OFF switch, it ensures optimal chain retention and smooth gear changes across mixed terrain. Compatible with HG 12-speed chains, this derailleur combines durability with performance for the modern rider.

## Description

SHIMANOGrx Rx820 12-Speed Rear Derailleur Black, 2X12-Speed

## Features

- Silent and secure rear shifting on rough terrain
- Adjustable chain stabilizer prevents chain slap and drops
- Shimano Shadow RD+ offers less distraction, a quiet drive train, reduced chain slap and a solution for chain drop
- ON/OFF stabilizer switch matches terrain for smooth and reliable shifting on mixed surfaces
- Compatible with HG 12-Speed Chains

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Shimano |
| UPC | 192790303611 |
| Item Package Dimensions L x W x H | 14 x 10 x 3 inches |
| Package Weight | 1 Pounds |
| Item Dimensions  LxWxH | 7 x 7 x 5 inches |
| Brand Name | SHIMANO |
| Warranty Description | Limited Warranty |
| Model Name | IRDRX820 |
| Suggested Users | mens |
| Number of Items | 1 |
| Part Number | SHIU1M1-BLA-S12S-BACKCOUNTRY |
| Included Components | Rear Derailleur |
| Size | 2x12-Speed |

## Product Details

- **Brand:** SHIMANO
- **Color:** Black
- **Material:** Multi
- **Item Weight:** 0.44 Pounds
- **Mounting Type:** Clamp-On Mount

## Images

![SHIMANOGrx Rx820 12-Speed Rear Derailleur Black, 2X12-Speed - Image 1](https://m.media-amazon.com/images/I/51Tv7pNTRBL.jpg)

## Frequently Bought Together

- Shimano Grx Rx820 12-Speed Rear Derailleur Black, 12-Speed
- Park Tool Master Link Pliers MLP-1.2

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**Shop now:** [https://www.desertcart.ro/products/568917316-shimanogrx-rx820-12-speed-rear-derailleur-black-2x12-speed](https://www.desertcart.ro/products/568917316-shimanogrx-rx820-12-speed-rear-derailleur-black-2x12-speed)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-13*