---
product_id: 361711848
title: "CXWXC Adjustable MTB Stem 31.8mm 70 Degree - 90/110/145mm Bike Stem Riser for Handlebar - Aluminum Alloy Mountain Bike Handlebar Riser Extender for MTB Road City Bike Bicycle (31.8 x 145mm)"
brand: "cxwxc"
price: "$59.82"
currency: USD
in_stock: true
reviews_count: 13
category: "Cxwxc"
url: https://www.desertcart.us/products/361711848-cxwxc-adjustable-mtb-stem-31-8mm-70-degree-90-110
store_origin: US
region: United States of America
---

# Adjustable length: 90/110/145mm 3D forged aluminum alloy for strength 70° angle range for perfect fit CXWXC Adjustable MTB Stem 31.8mm 70 Degree - 90/110/145mm Bike Stem Riser for Handlebar - Aluminum Alloy Mountain Bike Handlebar Riser Extender for MTB Road City Bike Bicycle (31.8 x 145mm)

**Brand:** cxwxc
**Price:** $59.82
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Elevate your ride, conquer every trail in comfort!

## Quick Answers

- **What is this?** CXWXC Adjustable MTB Stem 31.8mm 70 Degree - 90/110/145mm Bike Stem Riser for Handlebar - Aluminum Alloy Mountain Bike Handlebar Riser Extender for MTB Road City Bike Bicycle (31.8 x 145mm) by cxwxc
- **How much does it cost?** $59.82 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/361711848-cxwxc-adjustable-mtb-stem-31-8mm-70-degree-90-110)

## Best For

- cxwxc enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable 3D forged aluminum alloy ensures strength without extra weight
- • **Precision Fit:** Fits 31.8mm handlebars & 28.6mm fork stems for seamless compatibility
- • **Tailor Your Ride:** Easily tweak handlebar height & reach for all-day comfort
- • **Versatile Performance:** Ideal for MTB, road, and city bikes—upgrade your ride style instantly
- • **Quick & Secure Installation:** Four-bolt clamp guarantees a rock-solid handlebar grip

## Overview

The CXWXC Adjustable MTB Stem offers a customizable handlebar riser solution with lengths of 90, 110, and 145mm and a wide 70° angle adjustment range. Crafted from lightweight yet durable 3D forged aluminum alloy, it fits standard 31.8mm handlebars and 28.6mm fork stems. Designed for mountain, road, and city bikes, this stem enhances rider comfort and control, making long rides and tough terrains easier to conquer.

## Description

desertcart.com : CXWXC Adjustable MTB Stem 31.8mm 70 Degree - 90/110/145mm Bike Stem Riser for Handlebar - Aluminum Alloy Mountain Bike Handlebar Riser Extender for MTB Road City Bike Bicycle (31.8 x 145mm) : Sports & Outdoors

Review: Game-changing upgrade! - The CXWXC Adjustable Stem (31.8 × 90mm) completely transformed my ride. Installation was quick and straightforward, and the wide adjustment range made it easy to dial in the perfect upright position. The build feels solid and secure on my e-bike—and the improvement in comfort was immediate. Wrist, elbow, and back strain are basically gone, and I finally feel relaxed and in control while riding. If you’re looking to improve comfort and posture without changing handlebars, this stem is an absolute must-buy.
Review: Saved my life! Really - So a little history about me, I just turned 50, Medically Disabled from the fire Dept. Hadn't ridden a bike in 30 years. I used to race as a kid, and it's been my dream to get a bike for years. 25 years of Fire Fighting has left my body pretty tore up, and fat 340lbs. As MLK said though "I had a dream". Loose weight and eventually cycle again. I started on the recumbent stationary bike at the YMCA, and could barely pedal. I'm 100lbs down now I finally had moved to a standard seat stationary bike. I began to feel better, and I wanted a bike bad. I Could only afford an online bike, but I got the one of my dreams. Problem was I didn't even get to sit on it before I bought it. Fit was going to be an issue. My back has L5:S1 issues, and I have 0 flexibility. I need a boat load of stack. It enabled me to finally have a comfortable cockpit. The Stack is HUGE at 40 degrees, and the shortened reach which aids in the stability of my position. All for 20$. Saved me a 200$bike fit for now. It is definitely worth the money. Just look at my bike. Black/Blue color scheme, shaved out aero look. It get's me out side and riding. Can't beat that!!! As far as the dealer? Originally I received a box with someones random stem replaced and the adjustable no where to be found. Though desertcart I was quickly sent a replacement that got me up and riding within the week.

## Features

- NOTE: PLEASE CONFIRM YOUR SIZE BEFORE YOUR PURCHASE. 90, 110 130 and 145mm are not the total long of the stem.
- 【Ideal Stem for Rider】: Can't get comfortable on your bike? Tried too many bike stems? This adjustable stems are a useful way of tweaking your handlebar height and reach, particularly for touring where you spend long hours in the saddle. Our adjustable stem is the best bet to get comfortable
- 【Compatibility】: Only Fit for Handlebar diameter 31.8mm (1-1/4''), front fork stem diameter 28.6mm (1-1/8") and is available in a range of lengths – 90, 110 and 145mm.
- 【Material】: The MTB stem is manufactured with a 3D Forged alloy construction that gives strength and control. The durability of this stem is very adjustable with an angle of (-70°to +70°)
- 【Easy to Install】: Just connect up the original front fork stem. Four bolt bar clamp holds bar securely in position
- 【Suitable for Most Bike】: Our bike stems are suited to a wide variety of bicycles, and also to the different types of riders. Ideal for MTB racing and those who take their off road biking very seriously.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09C4JFPJY |
| Best Sellers Rank | #9,322 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #5 in Bike Stems |
| Bike Type | Mountain Bike |
| Brand Name | CXWXC |
| Color | A: 31.8 x 145mm |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,732) |
| Item Dimensions W x H | 1.25"W x 5.71"H |
| Item Weight | 0.34 Kilograms |
| Manufacturer | CXWXC |
| Manufacturer Part Number | XT-AS822 |
| Material Type | Aluminum |
| Model Number | XT-AS822 |

## Product Details

- **Brand:** CXWXC
- **Color:** A: 31.8 x 145mm
- **Item Weight:** 0.34 Kilograms
- **Material:** Aluminum
- **Product Dimensions:** 1.25"W x 5.71"H

## Images

![CXWXC Adjustable MTB Stem 31.8mm 70 Degree - 90/110/145mm Bike Stem Riser for Handlebar - Aluminum Alloy Mountain Bike Handlebar Riser Extender for MTB Road City Bike Bicycle (31.8 x 145mm) - Image 1](https://m.media-amazon.com/images/I/61G4+A7Z+tL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is it sturdy enough for an ebike?**
A: Yes

**Q: Will this fit my 2006 trek sl 1000 road bike ? i wanted the 145 mm**
A: If the steer tube on your TREK SL 1000 is 31.8 mm in diameter it will fit

**Q: Will it work on a carbon fork with a compression plug for support?**
A: I have nonidea lol...it fits on.m.y bike...seems universal. Idk

**Q: What is the distance between the handlebar clamp bolts horizontally?**
A: The distance center - center, 1 and 5/8’s .

## Customer Reviews

### ⭐⭐⭐⭐⭐ Game-changing upgrade!
*by A***S on January 3, 2026*

The CXWXC Adjustable Stem (31.8 × 90mm) completely transformed my ride. Installation was quick and straightforward, and the wide adjustment range made it easy to dial in the perfect upright position. The build feels solid and secure on my e-bike—and the improvement in comfort was immediate. Wrist, elbow, and back strain are basically gone, and I finally feel relaxed and in control while riding. If you’re looking to improve comfort and posture without changing handlebars, this stem is an absolute must-buy.

### ⭐⭐⭐⭐⭐ Saved my life! Really
*by M***S on May 19, 2025*

So a little history about me, I just turned 50, Medically Disabled from the fire Dept. Hadn't ridden a bike in 30 years. I used to race as a kid, and it's been my dream to get a bike for years. 25 years of Fire Fighting has left my body pretty tore up, and fat 340lbs. As MLK said though "I had a dream". Loose weight and eventually cycle again. I started on the recumbent stationary bike at the YMCA, and could barely pedal. I'm 100lbs down now I finally had moved to a standard seat stationary bike. I began to feel better, and I wanted a bike bad. I Could only afford an online bike, but I got the one of my dreams. Problem was I didn't even get to sit on it before I bought it. Fit was going to be an issue. My back has L5:S1 issues, and I have 0 flexibility. I need a boat load of stack. It enabled me to finally have a comfortable cockpit. The Stack is HUGE at 40 degrees, and the shortened reach which aids in the stability of my position. All for 20$. Saved me a 200$bike fit for now. It is definitely worth the money. Just look at my bike. Black/Blue color scheme, shaved out aero look. It get's me out side and riding. Can't beat that!!! As far as the dealer? Originally I received a box with someones random stem replaced and the adjustable no where to be found. Though amazon I was quickly sent a replacement that got me up and riding within the week.

### ⭐⭐⭐⭐⭐ Handle bar extender
*by T***O on March 25, 2026*

I was nervous at 1st because I was putting this on an Ebike but it is super sturdy and strong. Haven't had ANY issues with this product! Love it!

## Frequently Bought Together

- CXWXC Adjustable MTB Stem 31.8mm 70 Degree - 90/110/145mm Bike Stem Riser for Handlebar - Aluminum Alloy Mountain Bike Handlebar Riser Extender for MTB Road City Bike Bicycle (31.8 x 145mm)
- LITEONE Bike Stem Riser Bike Fork Stem Extender Bicycle Handlebar Raiser Head Up Adapter Suitable for Mountain Bike, Road Bike, MTB, BMX, Fixie (Aluminium Alloy, Adjustable, Black)
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-04-25*