---
product_id: 396900209
title: "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: "$61.98"
currency: USD
in_stock: true
category: "Triwonder"
url: https://www.desertcart.ec/products/396900209-riser-bike-extension-adapter-22-2-mm-or-25-4
store_origin: EC
region: Ecuador
---

# 150mm Extension - optimal handlebar height boost Universal Fit - fits 22.2mm & 25.4mm steerer tubes 6061 Aluminum Alloy - durable & lightweight 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:** $61.98
**Availability:** ✅ In Stock

## Summary

> 🚵‍♂️ Rise Above the Rest – Elevate your MTB game with TRIWONDER!

## Quick Answers

- **What is this?** 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?** $61.98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/396900209-riser-bike-extension-adapter-22-2-mm-or-25-4)

## 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

- • **Elevate Your Ride:** Boost handlebar height by 150mm for superior control and comfort.
- • **All-Season Durability:** Engineered to withstand every ride, rain or shine, for year-round performance.
- • **Premium Build Quality:** Crafted from polished anodized 6061 aluminum alloy for strength without the weight.
- • **Seamless Compatibility:** Converts threaded quill stems to threadless setups, fitting most 1-1/8” (28.6mm) bikes effortlessly.
- • **Effortless Installation:** Quick and easy setup means you’re back on the trail faster—no mechanic needed.

## 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, it fits both 22.2mm and 25.4mm steerer tubes and converts threaded quill stems to threadless setups. Lightweight, easy to install, and compatible with most 1-1/8” bikes, it enhances riding comfort and control across all seasons.

## 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

![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.ec/products/396900209-riser-bike-extension-adapter-22-2-mm-or-25-4](https://www.desertcart.ec/products/396900209-riser-bike-extension-adapter-22-2-mm-or-25-4)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-07-08*