---
product_id: 73686225
title: "Tourney Shimano Rear Derailleur RD-TY21"
brand: "tourney"
price: "$8"
currency: NZD
in_stock: false
reviews_count: 1
url: https://www.desertcart.nz/products/73686225-tourney-shimano-rear-derailleur-rd-ty21
store_origin: NZ
region: New Zealand
---

# 11T pulley for quiet rides Direct attachment design 6-speed SIS shifting Tourney Shimano Rear Derailleur RD-TY21

**Brand:** tourney
**Price:** $8
**Availability:** ❌ Out of Stock

## Summary

> 🚴‍♂️ Shift into Adventure with Shimano!

## Quick Answers

- **What is this?** Tourney Shimano Rear Derailleur RD-TY21 by tourney
- **How much does it cost?** $8 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/73686225-tourney-shimano-rear-derailleur-rd-ty21)

## Best For

- tourney enthusiasts

## Why This Product

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

## Key Features

- • **Durable Design:** Engineered with double tension construction for enhanced longevity and reduced noise.
- • **Easy Installation:** Direct attachment type simplifies installation, making it perfect for both seasoned cyclists and newcomers.
- • **Versatile Compatibility:** Available in GS/SS versions, ensuring compatibility with various cycling setups.
- • **High Capacity Performance:** Total capacity of 28T (SS) and 34T (GS) for versatile gear ratios.
- • **Smooth Shifting Experience:** Experience seamless 6-speed SIS rear index shifting for effortless gear transitions.

## Overview

The Tourney Shimano Rear Derailleur RD-TY21 is a high-performance cycling component designed for 6-speed SIS rear index shifting. With its durable double tension construction and quiet 11T pulley, it ensures a smooth and reliable ride. Compatible with both GS and SS versions, it offers a total capacity of 28T or 34T, making it a versatile choice for cyclists looking to enhance their gear performance.

## Description

Original Shimano parts guarantees that all components work perfectly for optimum performance and maximum safety and longevity.

## Features

- Rear Derailleur (6-speed) 6-speed SIS rear index shifting
- GS/SS version, direct attachment, with bracket spec available for standard/reversed drop out
- Double tension construction 11T Pulley: long service life and less noise
- Total capacity: 28T (SS), 34T (GS)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand Name | Tourney |
| Color | Black |
| Manufacturer | Shimano |
| Part Number | ARDTY21GSDL |
| Size | DIRECT ATTACHMENT TYPE |
| Sport Type | Cycling |

## Images

![Tourney Shimano Rear Derailleur RD-TY21 - Image 1](https://m.media-amazon.com/images/I/61dZDzKYX+L.jpg)

## Questions & Answers

**Q: is the 515 or s1s rear derailier on my avalon bike**
A: SIS - sis - SHIMANO INDEXING SYSTEM

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Five Stars
  

*by J***N on Reviewed in the United States on December 25, 2016*

very good

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**Shop now:** [https://www.desertcart.nz/products/73686225-tourney-shimano-rear-derailleur-rd-ty21](https://www.desertcart.nz/products/73686225-tourney-shimano-rear-derailleur-rd-ty21)

---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-14*