---
product_id: 48517146
title: "TRIWONDER Bike Stem Riser Handlebar Raiser Extender Fork Stem Extender Aluminum Alloy Head Up Adapter for 28.6mm 1-1/8\" Threadless Steerer Mountain Road Bike MTB BMX"
brand: "triwonder"
price: "Bs.361"
currency: BOB
in_stock: true
reviews_count: 13
category: "Triwonder"
url: https://www.desertcart.bo/products/48517146-triwonder-bike-stem-riser-handlebar-raiser-extender-fork-stem-extender
store_origin: BO
region: Bolivia
---

# TRIWONDER Bike Stem Riser Handlebar Raiser Extender Fork Stem Extender Aluminum Alloy Head Up Adapter for 28.6mm 1-1/8" Threadless Steerer Mountain Road Bike MTB BMX

**Brand:** triwonder
**Price:** Bs.361
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** TRIWONDER Bike Stem Riser Handlebar Raiser Extender Fork Stem Extender Aluminum Alloy Head Up Adapter for 28.6mm 1-1/8" Threadless Steerer Mountain Road Bike MTB BMX by triwonder
- **How much does it cost?** Bs.361 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/48517146-triwonder-bike-stem-riser-handlebar-raiser-extender-fork-stem-extender)

## Best For

- triwonder enthusiasts

## Why This Product

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

## Description

Shop TRIWONDER Bike Stem Riser Handlebar Raiser Extender Fork Stem Extender Aluminum Alloy Head Up Adapter for 28.6mm 1-1/8" Threadless Steerer Mountain Road Bike MTB BMX (Black, 123mm). Free delivery and returns on all eligible orders.

Review: Excellent buy great quality - This Stem Riser is excellent, build quality is first rate and the whole thing looks very neat and tidy when fitted. Very strong and robust looking, feels very safe and secure when fitted. Fitting is very simple and takes about 10 minutes to complete. I bought this to give me a better riding position, giving me a straighter back, reducing strain and making my cycling much more comfortable/ enjoyable. Works great back is fine and my seating position is much improved.
Review: Does what it's supposed to and looks good doing it.. - For the price, it is a really excellent buy. Fits well, works well, looks well. There isn't much more I can say but that it does exactly what it's supposed to and looks really good doing it. I am especially impressed with the quality and the fact that varying shims and spacers included cover pretty much all eventualities. Feels solid, not cheap and flimsy. Very good value and I am very happy with it.

## Features

- HIGH STRENGTH: 6061 aluminum alloy bike stem extender is 20% lighter than ordinary aluminum alloy stem extender; Strong in anti-corrosion and rust-free, high toughness and not deformed
- ADJUSTABLE: The bike fork stem extender is equipped with 3 x 10mm and 1 x 5mm gaskets; You can adjust the gaskets to fit your own height
- EASY INSTALLATION: Just connect the original front stem extender adaptor and tighten it; More flexible for you to raise up the fork stem
- COMFORTABL CYCLING: The head up adapter is flexible and lightweight, making it easier to ride uphill, giving you a comfortable riding experience
- SUITABLE FOR MOST BIKES: The handlebar extender is compatible for most bikes with 1-1/8''(28.6mm) threadless steerer like cross bikes, road bikes, mountain bikes, MTB, BMX

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N24G2WH |
| Batteries included? | No |
| Best Sellers Rank | 91,917 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 149 in Cycling Stems |
| Brand | TRIWONDER |
| Color | Black - 4 Spacers |
| Customer Reviews | 4.3 4.3 out of 5 stars (5,513) |
| Date First Available | 26 Feb. 2017 |
| Department | Boys' |
| Is discontinued by manufacturer | No |
| Item display length | 12.2 centimetres |
| Item display width | 2.86 centimetres |
| Item model number | OS0902BL |
| Manufacturer | TRIWONDER |
| Material type | Aluminium |
| Package Dimensions | 14.3 x 6.5 x 3.8 cm; 180 g |
| Size | 123mm |
| Weight | 0.18 Kilograms |

## Images

![TRIWONDER Bike Stem Riser Handlebar Raiser Extender Fork Stem Extender Aluminum Alloy Head Up Adapter for 28.6mm 1-1/8" Threadless Steerer Mountain Road Bike MTB BMX - Image 1](https://m.media-amazon.com/images/I/519VelJzNtL.jpg)

## Questions & Answers

**Q: Will this fit a gt aggressor pro?**
A: This will  fit any standard bicycle fork.The height you adjust best for you

**Q: Anyone add this to a trek ebike? specifically an allant?**
A: I put it on my Trek Marlin 5 and it works great.  It is pretty universal so I suspect it would fit the Trek e-bike.  Be aware however that it voids and "warrantee" that you have with Trek.  Not a huge deal with my Marlin 5 but with the e-bike it could be significant.

**Q: Will this extender fit a 27.5" Villotti /Genesis by Kent?**
A: If your bike has a 1 1/8” non threaded steer tube then it will fit. I would recommend having a local bike shop install it, in case any adjustments are needed.

**Q: Will you sell me the long cap screw? I cut mine too short. I’m**
A: no i am using mine look to a hardware store

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent buy great quality
*by C***E on 17 May 2025*

This Stem Riser is excellent, build quality is first rate and the whole thing looks very neat and tidy when fitted. Very strong and robust looking, feels very safe and secure when fitted. Fitting is very simple and takes about 10 minutes to complete. I bought this to give me a better riding position, giving me a straighter back, reducing strain and making my cycling much more comfortable/ enjoyable. Works great back is fine and my seating position is much improved.

### ⭐⭐⭐⭐⭐ Does what it's supposed to and looks good doing it..
*by M***. on 12 March 2022*

For the price, it is a really excellent buy. Fits well, works well, looks well. There isn't much more I can say but that it does exactly what it's supposed to and looks really good doing it. I am especially impressed with the quality and the fact that varying shims and spacers included cover pretty much all eventualities. Feels solid, not cheap and flimsy. Very good value and I am very happy with it.

### ⭐⭐⭐⭐ Does it job
*by M***M on 17 March 2023*

It does its job, but I think I should wait for a more extended version to be back in stock. The long screw was not even. But it's even enough to install the extender.

## Frequently Bought Together

- TRIWONDER Bike Stem Riser Handlebar Extender Bicycle Fork Stem for MTB BMX Mountain Bike Aluminium Alloy Head Up Adapter
- TRIWONDER Bike Stem 25.4 31.8 Adjustable 60 Degree 90mm 110mm 130mm Bike Handlebar Extender Stem Riser Bicycle Handle Bar Extensions for Mountain Bike, Road Bike, MTB, BMX, Cycling
- Comfortable Seat Cushion for Men Women with Dual Shock Absorbing Ball Memory Foam Waterproof Wide Bicycle Saddle Fit for Road Bikes

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**Shop now:** [https://www.desertcart.bo/products/48517146-triwonder-bike-stem-riser-handlebar-raiser-extender-fork-stem-extender](https://www.desertcart.bo/products/48517146-triwonder-bike-stem-riser-handlebar-raiser-extender-fork-stem-extender)

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-03-20*