---
product_id: 426126542
title: "Rear Derailleur Hanger Extension, 25mm Aluminum Alloy Bicycle Tail Hook Extender Link for MTB Road Gravel Bike, Compatible with 40T 42T 46T 50T Large Cassettes Upgrade"
brand: "swishti"
price: "¥5257"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/426126542-rear-derailleur-hanger-extension-25mm-aluminum-alloy-bicycle-tail-hook
store_origin: JP
region: Japan
---

# M10 bolt included 42mm length AL7075 aluminum Rear Derailleur Hanger Extension, 25mm Aluminum Alloy Bicycle Tail Hook Extender Link for MTB Road Gravel Bike, Compatible with 40T 42T 46T 50T Large Cassettes Upgrade

**Brand:** swishti
**Price:** ¥5257
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Elevate Your Cycling Game!

## Quick Answers

- **What is this?** Rear Derailleur Hanger Extension, 25mm Aluminum Alloy Bicycle Tail Hook Extender Link for MTB Road Gravel Bike, Compatible with 40T 42T 46T 50T Large Cassettes Upgrade by swishti
- **How much does it cost?** ¥5257 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/426126542-rear-derailleur-hanger-extension-25mm-aluminum-alloy-bicycle-tail-hook)

## Best For

- swishti enthusiasts

## Why This Product

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

## Key Features

- • **Upgrade Your Ride:** Transform your bike's performance with this precision-engineered extender.
- • **Lightweight Design:** Weighing in at just 17g, it won’t weigh you down on your rides.
- • **Professional Quality:** Crafted from high-grade AL7075 aluminum for durability and reliability.
- • **Stability Meets Speed:** Achieve faster shifts and enhanced stability with a 25mm center distance.
- • **Compatibility Champion:** Easily fits 34-52t cassettes for both MTB and road bikes.

## Overview

The SwishTi Road Mountain MTB Bicycle Bike Rear Derailleur Hanger with M10 Bolt Extender is designed for cyclists looking to upgrade their Shimano-compatible bikes. With a total length of 42mm and a center distance of 25mm, this extender allows for compatibility with larger cassettes (34-52t) while enhancing shift speed and stability. Made from durable AL7075 aluminum, it weighs only 17g, making it a lightweight yet robust addition to your cycling gear.

## Description

Road Mountain MTB Bicycle Bike Rear Derailleur Hanger w/M10 Bolt Extender for upgrading Shimano 34-52t Larger Cassette use

## Features

- MTB Road E-BIke Rear Derailleur Hanger extender kit with bolts, fit 34-52t MTB Road bike larger cassette
- A Little longer of center distance, 25mm, easily compatible with 40/42/46/50/52T for MTB and 34/36/40/42T for road. Total length is 42mm which strikes the balance between compatibility and stability.
- Structural upgrading, accurate adjustment, abolishing the limit position on the common hanger extender, increase the adjustment range, and easier to adjust in place. Also increase shift speed.
- Professional testing tools ensure high qualities and made of AL7075 aluminum which comes with M10 screw.
- Specification: Material:Alloy / Length:42mm / C to C diameter:25mm / Color:Black / Weight:approx.17g / For Shimano rear derailleur use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material Type | Metal |
| Batteries Included? | No |
| Brand | SwishTi |
| Manufacturer | SwishTi |
| Manufacturer reference | SwishTi RD hanger |
| Package Dimensions | 14.91 x 12.9 x 1.6 cm; 17 g |
| ASIN | B098T8P7QT |

## Images

![Rear Derailleur Hanger Extension, 25mm Aluminum Alloy Bicycle Tail Hook Extender Link for MTB Road Gravel Bike, Compatible with 40T 42T 46T 50T Large Cassettes Upgrade - Image 1](https://m.media-amazon.com/images/I/41FOU3E7Q2S.jpg)

## Frequently Bought Together

- SwishTi Road Mountain MTB Bicycle Bike Rear Derailleur Hanger w/M10 Bolt Extender for upgrading Shimano 34-52t Larger Cassette use
- Shimano Universal Standard Brake Cable Set, for MTB or Road Bikes

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/426126542-rear-derailleur-hanger-extension-25mm-aluminum-alloy-bicycle-tail-hook](https://www.desertcart.jp/products/426126542-rear-derailleur-hanger-extension-25mm-aluminum-alloy-bicycle-tail-hook)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-07*