---
product_id: 631062118
title: "Rear Derailleur RD-TY21B 6/7 Speed Hanger Mount for Mountain, Tricycle, Commuter, and Cruiser Bike"
brand: "relwears"
price: "€ 41.11"
currency: EUR
in_stock: true
url: https://www.desertcart.nl/products/631062118-rear-derailleur-rd-ty21b-6-7-speed-hanger-mount-mountain
store_origin: NL
region: Netherlands
---

# Durable aluminum alloy build Fits MTB, commuter & cruiser bikes 6/7 speed compatibility Rear Derailleur RD-TY21B 6/7 Speed Hanger Mount for Mountain, Tricycle, Commuter, and Cruiser Bike

**Brand:** relwears
**Price:** € 41.11
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Shift into the future with precision and power!

## Quick Answers

- **What is this?** Rear Derailleur RD-TY21B 6/7 Speed Hanger Mount for Mountain, Tricycle, Commuter, and Cruiser Bike by relwears
- **How much does it cost?** € 41.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/631062118-rear-derailleur-rd-ty21b-6-7-speed-hanger-mount-mountain)

## Best For

- relwears enthusiasts

## Why This Product

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

## Key Features

- • **Universal Versatility:** Perfectly compatible with mountain, commuter, cruiser, folding, and tricycle bikes—one derailleur to rule them all.
- • **Hanger Mount Precision Fit:** Designed for secure hanger mounting—check compatibility to upgrade your ride confidently.
- • **Seamless 6/7 Speed Shifting:** Effortlessly glide through gears for a smooth ride every time.
- • **Professional Support Included:** Expert customer service ready to assist, ensuring your upgrade is hassle-free and reliable.
- • **Rugged Aluminum Alloy Durability:** Engineered to withstand the toughest trails and daily commutes without compromise.

## Overview

The RD-TY21B 6/7 Speed Rear Derailleur by Relwears offers durable aluminum alloy construction and smooth shifting performance, compatible with a wide range of bikes including mountain, commuter, cruiser, and folding models. Designed for hanger mount setups, it ensures reliable gear transitions and professional support for a confident upgrade.

## Description

RD-TY21B 6/7 Speed Derailleur - Direct/Hanger Mount for Mountain, Tricycle, Commuter, Cruiser Bikes

## Features

- MODEL: RD-TY21B; Bike rear derailleur is compatible with 6/7 speed most kinds of bikes.
- PERFORMANCE: Durable aluminum alloy material and excellent shifting performance ensure safe and stable riding.
- WIDE APPLICATION: This bicycle transmission is Suitable for MTB, mountain bikes, commuter bike, cruiser bike, folding bike etc.
- NOTE: The bike rear derailleur is hanger mount, not direct mount .Please check the mount type of the original part before purchasing. If you have any questions, please feel free to contact us, we will provide you with professional services.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Relwears |
| Item Package Dimensions L x W x H | 5.59 x 5.59 x 2.44 inches |
| Package Weight | 0.33 Kilograms |
| Brand Name | Relwears |
| Warranty Description | 1 |
| Model Name | TY21B Rear Derailleur |
| Included Components | NO |
| Size | 6/7 Speed |

## Product Details

- **Brand:** Relwears
- **Color:** Black-RD-TY21B-Hanger Mount
- **Material:** Aluminum
- **Item Weight:** 0.32 Kilograms
- **Mounting Type:** Hanger Mount

## Images

![Rear Derailleur RD-TY21B 6/7 Speed Hanger Mount for Mountain, Tricycle, Commuter, and Cruiser Bike - Image 1](https://m.media-amazon.com/images/I/612TzUYs5GL.jpg)

## Available Options

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

## Frequently Bought Together

- RD-TY21B 6/7 Speed Derailleur - Direct/Hanger Mount for Mountain, Tricycle, Commuter, Cruiser Bikes
- Bike Chain Kit, Single/6/7/8/9/10/11/12 Speed Multi-Function Bike Mechanic Repair Kit, Chain Breaker and Bike Link Plier with Hook and 6 Pairs Bicycle Buckle, Reusable (6/7/8 Speed Bike Chain Kit)
- FGBNM Single/6/7/8/9/10/11/12 Speed Bike Chain, Bike Chain for Road Mountain Racing Cycling

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**Shop now:** [https://www.desertcart.nl/products/631062118-rear-derailleur-rd-ty21b-6-7-speed-hanger-mount-mountain](https://www.desertcart.nl/products/631062118-rear-derailleur-rd-ty21b-6-7-speed-hanger-mount-mountain)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-11*