---
product_id: 396900209
title: "TRIWONDER Riser Bike Extension Adapter 22.2 mm or 25.4 mm x 150 mm Extension Stem Diver Fork for Mountain Bike MTB"
brand: "triwonder"
price: "128.27 DT"
currency: TND
in_stock: true
category: "Triwonder"
url: https://www.desertcart.tn/products/396900209-triwonder-riser-bike-extension-adapter-22-2-mm-or-25
store_origin: TN
region: Tunisia
---

# 150mm Extension - optimal handlebar height boost Threaded to Threadless Conversion - seamless upgrade 6061 Aluminum Alloy - durable & lightweight TRIWONDER Riser Bike Extension Adapter 22.2 mm or 25.4 mm x 150 mm Extension Stem Diver Fork for Mountain Bike MTB

**Brand:** triwonder
**Price:** 128.27 DT
**Availability:** ✅ In Stock

## Summary

> 🚵‍♂️ Elevate your MTB game—handlebar height redefined!

## Quick Answers

- **What is this?** TRIWONDER Riser Bike Extension Adapter 22.2 mm or 25.4 mm x 150 mm Extension Stem Diver Fork for Mountain Bike MTB by triwonder
- **How much does it cost?** 128.27 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/396900209-triwonder-riser-bike-extension-adapter-22-2-mm-or-25)

## Best For

- triwonder enthusiasts

## Why This Product

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

## Key Features

- • **Premium Build:** Crafted from polished anodized 6061 aluminum alloy for strength without the weight.
- • **Elevate Your Ride:** Boost handlebar height by 150mm for superior control and comfort.
- • **Effortless Upgrade:** Converts traditional threaded quill stems to modern threadless setups in minutes.
- • **Ride with Confidence:** Trusted by 800+ riders with a 4.5-star rating—join the community upgrading their MTB experience.
- • **Universal Compatibility:** Fits most bikes with 1-1/8'' (28.6mm) threadless steerer tubes effortlessly.

## Overview

The TRIWONDER Riser Bike Extension Adapter is a 150mm quill stem converter made from durable 6061 anodized aluminum alloy. Designed to raise your mountain bike's handlebar height by converting threaded quill stems to threadless setups, it fits most bikes with a 1-1/8'' (28.6mm) steerer tube. Lightweight and easy to install, this adapter enhances riding comfort and control, backed by strong user approval.

## Description

💡 Since all our products are fulfilled by desertcart, if you have any questions about shipping, exchanging, returning or refunding, please contact desertcart customer service directly. 💡

## Features

- ✅ Material - The quill stem converter is made of 6061 Aluminium Alloy With polished anodized finish
- ✅ Size - Base Diameter(Upper diameter): 1 1/8” (28.6mm); Steerer Tube Diameter: 22.2mm/25.4mm; Total Length: 150mm
- ✅ Raises the height of your handlebars by increasing the height of your bike stem
- ✅ Easy installation, converts a threaded quill stem setup to threadless
- ✅ Perfect for Most Bikes: The quill riser extender is suitable for most bike with 1-1/8''(28.6mm) threadless steerer

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B094CKZJGZ |
| Batteries Included? | No |
| Brand | TRIWONDER |
| Color | Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (868) |
| Date First Available | 14 July 2021 |
| Item model number | 0919 |
| Manufacturer | TRIWONDER |
| Number of Items | 1 |
| Package Dimensions | 16.51 x 7.29 x 3 cm; 168 g |
| Season | all-season |
| Size | 22,2 x 150 mm |

## Images

![TRIWONDER Riser Bike Extension Adapter 22.2 mm or 25.4 mm x 150 mm Extension Stem Diver Fork for Mountain Bike MTB - Image 1](https://m.media-amazon.com/images/I/51L3e0wu4tL.jpg)

## Available Options

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

## Frequently Bought Together

- TRIWONDER Stem Riser Adapter Aluminum Bike Fork Stem Quill Riser Extender Extension Road Mountain Bicycle Stem Head Up Raiser Handlebar Adapter
- 31.8 Stem 45mm Bike Stem Wake Mountain Bike Stem Short Handlebar Stem for Most Bicycle, Road Bike, MTB, BMX, Fixie Gear, Cycling (Aluminum Alloy, Black Blue Gold Red)
- GPMTER Bike Handlebar Grips, Single Lock on Bicycle Handle Bar, for BMX, Mountain, MTB, Beach Cruiser, Scooter, Folding Bike, Soft Non-Slip-Rubber Hand Grip Comfortable Ergonomic

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**Shop now:** [https://www.desertcart.tn/products/396900209-triwonder-riser-bike-extension-adapter-22-2-mm-or-25](https://www.desertcart.tn/products/396900209-triwonder-riser-bike-extension-adapter-22-2-mm-or-25)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-05-31*