---
product_id: 245563904
title: "lundeng OEM RD-TZ31 6/7 Speed Rear Derailleur Direct Mount for Mountain Bike"
brand: "lundeng"
price: "A$100"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/245563904-lundeng-oem-rd-tz31-6-7-speed-rear-derailleur-direct
store_origin: AU
region: Australia
---

# Direct mount for secure fit 6/7 speed precision shifting Durable alloy & plastic build lundeng OEM RD-TZ31 6/7 Speed Rear Derailleur Direct Mount for Mountain Bike

**Brand:** lundeng
**Price:** A$100
**Availability:** ✅ In Stock

## Summary

> ⚡ Shift into the fast lane with precision and style!

## Quick Answers

- **What is this?** lundeng OEM RD-TZ31 6/7 Speed Rear Derailleur Direct Mount for Mountain Bike by lundeng
- **How much does it cost?** A$100 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/245563904-lundeng-oem-rd-tz31-6-7-speed-rear-derailleur-direct)

## Best For

- lundeng enthusiasts

## Why This Product

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

## Key Features

- • **Direct Mount Design:** Bolts straight to your frame for enhanced stability and quick installation—no hanger needed.
- • **Lightweight Yet Durable:** Crafted from high-quality alloy and plastic, balancing strength with minimal weight (~300g).
- • **Universal Compatibility:** Fits aluminum alloy frames with 6/7 speed freewheels and Shimano SIS indexing for versatile upgrades.
- • **Upgrade with Confidence:** Latest RD-TZ31 model ensures precise performance, replacing RD-TZ30 with identical fit and improved reliability.
- • **Seamless 6/7 Speed Shifting:** Experience smooth, reliable gear changes tailored for mountain and road biking.

## Overview

The Lundeng OEM RD-TZ31 is a direct mount rear derailleur designed for 6/7 speed mountain and road bikes. Made from durable alloy and plastic, it offers smooth Shimano SIS indexed shifting and fits aluminum alloy frames with direct mount dropouts. Weighing approximately 300g, it’s the latest upgrade from the RD-TZ30, ensuring reliable performance and easy installation for serious cyclists.

## Description

lundeng OEM RD-TZ31 6/7 Speed Rear Derailleur Direct Mount for Mountain Bike

## Features

- Shimano RD-TZ31 6/7 Speed Rear Derailleur Direct Mount For Mountain Bike
- This is Direct Mount type, NOT hub bolt mount type，Material: High quality plastic and alloy
- For 6/7 grade freewheel, SIS index shift, fit for mountain bike/road bike
- Mainly used in aluminum alloy bike frame
- NOTE: Please check the mount type of your original part before buying, if bike frame with hook, as picture shows, you can use it

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Batteries Included | No |
| Brand | lundeng |
| Colour | Black |
| Material Type | Metal, Plastic |
| Number of Items | 1 |
| Manufacturer | Lundeng |
| Country of Origin | USA |

## Product Details

- **Brand:** lundeng
- **Colour:** Black
- **Material:** Metal, Plastic
- **Mounting Type:** Braze-On Mount
- **Manufacturer:** Lundeng

## Images

![lundeng OEM RD-TZ31 6/7 Speed Rear Derailleur Direct Mount for Mountain Bike - Image 1](https://m.media-amazon.com/images/I/71Jdx8EnnAL.jpg)

## Questions & Answers

**Q: Have an ultus on an old schwinn voyager 12 speed will it work?**
A: You need to check a couple of things to find out if this will work.  One, the mounting , Will it go onto my bike. Two, the length of the idler cage, Short or Long.  Once you determine these I can see no reason it should work.

## Frequently Bought Together

- lundeng OEM RD-TZ31 6/7 Speed Rear Derailleur Direct Mount for Mountain Bike
- EBIKELING 7-Speed Bicycle Bike Freewheel Cassette Gear 14-28 ebike

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**Shop now:** [https://www.desertcart.com.au/products/245563904-lundeng-oem-rd-tz31-6-7-speed-rear-derailleur-direct](https://www.desertcart.com.au/products/245563904-lundeng-oem-rd-tz31-6-7-speed-rear-derailleur-direct)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-23*