---
product_id: 430704734
title: "Rear Derailleur, Huazu Bike Parts Gear Shifter for RD-TZ31-A with Direct Mount/Hanger Mount for 6/7 Speed Mountain Bicycles"
brand: "huazu"
price: "€ 42.12"
currency: EUR
in_stock: true
url: https://www.desertcart.com.cy/products/430704734-rear-derailleur-huazu-bike-parts-gear-shifter-for-rd-tz31
store_origin: CY
region: Cyprus
---

# 6/7-speed precision shifting Durable aluminum & plastic alloy build 34T total capacity for versatile gearing Rear Derailleur, Huazu Bike Parts Gear Shifter for RD-TZ31-A with Direct Mount/Hanger Mount for 6/7 Speed Mountain Bicycles

**Brand:** huazu
**Price:** € 42.12
**Availability:** ✅ In Stock

## Summary

> ⚡ Shift into the future with precision and power!

## Quick Answers

- **What is this?** Rear Derailleur, Huazu Bike Parts Gear Shifter for RD-TZ31-A with Direct Mount/Hanger Mount for 6/7 Speed Mountain Bicycles by huazu
- **How much does it cost?** € 42.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/430704734-rear-derailleur-huazu-bike-parts-gear-shifter-for-rd-tz31)

## Best For

- huazu enthusiasts

## Why This Product

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

## Key Features

- • **Direct Braze-On Mount:** Easy installation with a direct mount system tailored for frames with a hanger hook—no hub bolt fuss.
- • **Universal Compatibility:** Perfect for mountain, road, and folding bikes, making it the go-to upgrade for any cycling enthusiast.
- • **Wide Gear Range Capacity:** Supports up to 34T total capacity, handling sprockets from 14T to 28T for versatile terrain adaptability.
- • **Seamless 6/7-Speed Shifting:** Experience smooth, reliable gear changes with SIS Index compatibility designed for mountain and road bikes alike.
- • **Robust Aluminum Alloy Construction:** Engineered for durability and stability, ensuring your ride stays safe and performance-driven mile after mile.

## Overview

The Huazu RD-TZ31-A rear derailleur offers precise 6/7-speed SIS indexed shifting with a durable aluminum and plastic alloy design. Featuring a direct braze-on mount for easy installation on compatible frames, it supports a total capacity of 34T and sprockets ranging from 14T to 28T. Ideal for mountain, road, and folding bikes, this derailleur ensures stable, smooth gear transitions backed by a 1-year warranty.

## Description

Rear Derailleur, Huazu Bike Parts Gear Shifter for RD-TZ31-A with Direct Mount/Hanger Mount for 6/7 Speed Mountain Bicycles

## Features

- MODEL: RD-TZ31-A bike rear derailleur, Compatible with GS 6 / 7 speed SIS Index Shifting drivetrains.
- STABILITY: Durable aluminum alloy and plastic alloy material, Providing excellent shifting performance ensure safe and stable.
- PARM: Total capacity 34T, Largest sprocket 28T, Smallest sprocket 14T, Front chain wheel tooth difference 20T.
- NOTE: The bike rear derailleur is direct mount, not hub bolt mount. Please check the mount type of the original part before ordering, if bike frame with hook, as picture shows, you can use it.
- COMPATIBILITY: Suitable for mountain bikes, road bikes, folding bicycles and so on.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 5.11"L x 3.94"W x 1.57"H |
| Manufacturer | Huazu |
| UPC | 731235765869 |
| Item Package Dimensions L x W x H | 6.02 x 4.09 x 2.99 inches |
| Package Weight | 0.28 Kilograms |
| Item Dimensions  LxWxH | 5.11 x 3.94 x 1.57 inches |
| Brand Name | Huazu |
| Warranty Description | 1 Year |
| Model Name | RDTZ31A |
| Suggested Users | unisex-adult |
| Part Number | RDTZ31A |
| Size | Large |

## Product Details

- **Brand:** Huazu
- **Color:** Black
- **Material:** Aluminum
- **Item Weight:** 0.28 Kilograms
- **Mounting Type:** Braze-On Mount

## Images

![Rear Derailleur, Huazu Bike Parts Gear Shifter for RD-TZ31-A with Direct Mount/Hanger Mount for 6/7 Speed Mountain Bicycles - Image 1](https://m.media-amazon.com/images/I/716ziE224XL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does it work with mongoose R4050WM 21 speed mountain bike?**
A: I used it on my teens mongoose, unsure of the model, but I would think so?

**Q: Does it work for a 21 speed bike?**
A: Yes, we used it for a 21 Speed Mongoose bike

## Frequently Bought Together

- Rear Derailleur, Huazu Bike Parts Gear Shifter for RD-TZ31-A with Direct Mount/Hanger Mount for 6/7 Speed Mountain Bicycles
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- 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.com.cy/products/430704734-rear-derailleur-huazu-bike-parts-gear-shifter-for-rd-tz31](https://www.desertcart.com.cy/products/430704734-rear-derailleur-huazu-bike-parts-gear-shifter-for-rd-tz31)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-16*