---
product_id: 262455021
title: "MOHEGIA Bike Rear Derailleur RD-TY21B 6/7 Speed Direct Mount for Mountain Bicycle-Black"
brand: "mohegia"
price: "€ 9.64"
currency: EUR
in_stock: true
url: https://www.desertcart.pt/products/262455021-mohegia-bike-rear-derailleur-rd-ty21b-6-7-speed-direct
store_origin: PT
region: Portugal
---

# 6/7 Speed Compatibility Aluminum Alloy Durability Direct Mount Design MOHEGIA Bike Rear Derailleur RD-TY21B 6/7 Speed Direct Mount for Mountain Bicycle-Black

**Brand:** mohegia
**Price:** € 9.64
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Shift Your Ride into High Gear!

## Quick Answers

- **What is this?** MOHEGIA Bike Rear Derailleur RD-TY21B 6/7 Speed Direct Mount for Mountain Bicycle-Black by mohegia
- **How much does it cost?** € 9.64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/262455021-mohegia-bike-rear-derailleur-rd-ty21b-6-7-speed-direct)

## Best For

- mohegia enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Crafted from aluminum alloy for unmatched durability.
- • **Universal Fit:** Perfectly compatible with MTB, road bikes, and more.
- • **Seamless Shifting:** Experience smooth gear transitions for an exhilarating ride.
- • **Lightweight Champion:** Weighing only 0.25 kg, it won’t weigh you down.
- • **Customer-Centric Support:** Reach out anytime for top-notch service and assistance.

## Overview

The MOHEGIA Bike Rear Derailleur RD-TY21B is a high-performance component designed for 6/7 speed mountain bikes. Its direct mount design ensures compatibility with various bike types, while the aluminum alloy construction guarantees durability and stability during rides. Weighing just 0.25 kg, it’s lightweight yet robust, making it an essential upgrade for cycling enthusiasts.

## Description

Full description not available

## Features

- *Model：RD-TY21B rear derailleur compatible with 6/7 speed mountain bikes.
- *Note:The rear derailleur is direct mount,not hub bolt mount .Please check the mount type of the original part before ordering.
- *Stability: With aluminum alloy material and excellent shifting performance ensure safe and stable riding.
- *Wide application: Rear derailleur is easy to use and maintain.Suitable for MTB,mountain bikes, road bikes, folding bicycles and so on.
- *Important: Please feel free to contact if you have any questions, we will provide quality service.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | MOHEGIA |
| Item Package Dimensions L x W x H | 5.04 x 4.69 x 2.48 inches |
| Package Weight | 0.25 Kilograms |
| Brand Name | MOHEGIA |
| Part Number | EN-RDTY21B |

## Product Details

- **Brand:** MOHEGIA
- **Color:** Black
- **Item Weight:** 0.25 Kilograms
- **Case Material:** Aluminum
- **Mounting Type:** Braze-On Mount

## Images

![MOHEGIA Bike Rear Derailleur RD-TY21B 6/7 Speed Direct Mount for Mountain Bicycle-Black - Image 1](https://m.media-amazon.com/images/I/61BU+pZTgJL.jpg)
![MOHEGIA Bike Rear Derailleur RD-TY21B 6/7 Speed Direct Mount for Mountain Bicycle-Black - Image 2](https://m.media-amazon.com/images/I/71-fA+xUNHL.jpg)
![MOHEGIA Bike Rear Derailleur RD-TY21B 6/7 Speed Direct Mount for Mountain Bicycle-Black - Image 3](https://m.media-amazon.com/images/I/61ftZ++08mL.jpg)
![MOHEGIA Bike Rear Derailleur RD-TY21B 6/7 Speed Direct Mount for Mountain Bicycle-Black - Image 4](https://m.media-amazon.com/images/I/71RUZAalsJL.jpg)
![MOHEGIA Bike Rear Derailleur RD-TY21B 6/7 Speed Direct Mount for Mountain Bicycle-Black - Image 5](https://m.media-amazon.com/images/I/91W+Dg5yj3L.jpg)

## Questions & Answers

**Q: Does this unit have the "B" screw ?**
A: this is exact replacement and I do not see a "B" screw works fine for me

**Q: Is this short cage**
A: yes，the  rear derailleur RD-TZ31-A is  short cage,and it compatible with 6/7 speed mountain bike.

**Q: Is this a real shimano part ? The shimano version is steel and resin ,not alloy .**
A: This is copy cat

**Q: Does it come with the little metal wire thing? That goes to change the gears**
A: You are probably talking about the shift cable/wire. If that is the case the answer is no it does not come with the derailleur. I would order derailleur wire/cable when you order the derailleur or better yet contact the vendor that you are dealing with and ask them to sell you a shifter wire to send with the derailleur.

## Frequently Bought Together

- MOHEGIA Bike Rear Derailleur -6/7/8 Speed Hanger Mount/Direct Mount for MTB Mountain Bicycle
- ZONKIE 6/7/8 Speed Bike Chain 1/2 x 3/32 Inch 116 Links

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**Shop now:** [https://www.desertcart.pt/products/262455021-mohegia-bike-rear-derailleur-rd-ty21b-6-7-speed-direct](https://www.desertcart.pt/products/262455021-mohegia-bike-rear-derailleur-rd-ty21b-6-7-speed-direct)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-17*