---
product_id: 66639147
title: "BESNIN 31.8 MTB Stem 90mm 45 Degree Mountain Bike Stem Bicycle Handlebar Stem Riser for Road Bike, Cycling, BMX, MTB(Aluminum Alloy，Black)"
brand: "besnin"
price: "1730 som"
currency: KGS
in_stock: false
reviews_count: 1
url: https://www.desertcart.kg/products/66639147-besnin-31-8-mtb-stem-90mm-45-degree-mountain-bike
store_origin: KG
region: Kyrgyzstan
---

# Length: 90mm Handlebar Diameter: 31.8mm Weight: 220g BESNIN 31.8 MTB Stem 90mm 45 Degree Mountain Bike Stem Bicycle Handlebar Stem Riser for Road Bike, Cycling, BMX, MTB(Aluminum Alloy，Black)

**Brand:** besnin
**Price:** 1730 som
**Availability:** ❌ Out of Stock

## Summary

> 🚴‍♂️ Elevate Your Cycling Game!

## Quick Answers

- **What is this?** BESNIN 31.8 MTB Stem 90mm 45 Degree Mountain Bike Stem Bicycle Handlebar Stem Riser for Road Bike, Cycling, BMX, MTB(Aluminum Alloy，Black) by besnin
- **How much does it cost?** 1730 som with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/66639147-besnin-31-8-mtb-stem-90mm-45-degree-mountain-bike)

## Best For

- besnin enthusiasts

## Why This Product

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

## Key Features

- • **Secure & Stable:** Four-bolt bar clamp ensures your handlebar stays firmly in place, no matter the terrain.
- • **Elevate Your Ride:** Transform your cycling experience with a 45° adjustable angle for optimal handlebar height.
- • **Effortless Installation:** Quick and easy setup—connects seamlessly to your original front fork stem.
- • **Lightweight Performance:** Weighing in at just 220g, this aluminum alloy stem enhances your bike's agility without compromising strength.
- • **Universal Compatibility:** Designed to fit most mountain bikes, road bikes, and BMX with a 31.8mm handlebar diameter.

## Overview

The BESNIN 31.8 MTB Stem is a high-performance bicycle handlebar riser designed for mountain bikes, road bikes, and BMX. With a 90mm length and a 45° adjustable angle, it allows for customizable handlebar height, ensuring a comfortable ride. Made from durable aluminum alloy, it weighs only 220g and features a secure four-bolt clamp for stability. Compatible with a 31.8mm handlebar diameter and 28.6mm fork stem, this stem is perfect for cycling enthusiasts looking to enhance their biking experience.

## Description

Features:The stem adopts quality aluminium alloy, high strength and anti-deformation.CNC processing and anodization treatment ensure sleek and colorfast surface and great anti-corrosion feature.Easy to install on bike stem and firmly connect handlebar.Suitable for front fork diameter 28.6mm, handlebar diameter 31.8mm.Good replacement for your mountain bike. Specification:Material: Aluminium alloyColor: Black Front Fork Tube Diameter: Approx. 28.6mm / 1.13inHandlebar Diameter: Approx. 31.8mm / 1.25inDistance between Two Hole: Approx. 90mm / 3.54inDegree: -/+ 45 degreesWeight: Approx. 220g Package List:1 x Bike Stem

## Features

- Handlebar Diameter: 31.8mm (1-1/4"), Stereer Tube diameter: 28.6mm (1-1/8")
- Angle: +/- 45°（help to up or down the heigth of handlebar）.Length: 90mm(center distance of the two holes), Weight: 220g
- This 45 degree stem is only suitable for front fork stem diameter 28.6mm and the handlebar diameter 31.8mm.Please confirm the diameter of your handlebar is 31.8mm before you buy it
- Four bolt bar clamp holds bar securely in position.Easy installation, just connect up the original front fork stem
- Fit for most 31.8mm handlebar mountain bikes, road bike， MTB，BMX, etc

## Images

![BESNIN 31.8 MTB Stem 90mm 45 Degree Mountain Bike Stem Bicycle Handlebar Stem Riser for Road Bike, Cycling, BMX, MTB(Aluminum Alloy，Black) - Image 1](https://m.media-amazon.com/images/I/51lgUOmKljL.jpg)
![BESNIN 31.8 MTB Stem 90mm 45 Degree Mountain Bike Stem Bicycle Handlebar Stem Riser for Road Bike, Cycling, BMX, MTB(Aluminum Alloy，Black) - Image 2](https://m.media-amazon.com/images/I/61BIbdbM-4L.jpg)
![BESNIN 31.8 MTB Stem 90mm 45 Degree Mountain Bike Stem Bicycle Handlebar Stem Riser for Road Bike, Cycling, BMX, MTB(Aluminum Alloy，Black) - Image 3](https://m.media-amazon.com/images/I/512XddbbHAL.jpg)
![BESNIN 31.8 MTB Stem 90mm 45 Degree Mountain Bike Stem Bicycle Handlebar Stem Riser for Road Bike, Cycling, BMX, MTB(Aluminum Alloy，Black) - Image 4](https://m.media-amazon.com/images/I/512iVufluwL.jpg)
![BESNIN 31.8 MTB Stem 90mm 45 Degree Mountain Bike Stem Bicycle Handlebar Stem Riser for Road Bike, Cycling, BMX, MTB(Aluminum Alloy，Black) - Image 5](https://m.media-amazon.com/images/I/51iaA+R-6hL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good for me
  

*by E***K on Reviewed in the United States on December 3, 2018*

Holes well, lightweight, and definitely helps chubby dude like me not have a sore back

---

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-03-04*