--- 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: "€ 2.21" currency: EUR in_stock: false reviews_count: 1 url: https://www.desertcart.hr/products/66639147-besnin-31-8-mtb-stem-90mm-45-degree-mountain-bike store_origin: HR region: Croatia --- # 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:** € 2.21 **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?** € 2.21 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/66639147-besnin-31-8-mtb-stem-90mm-45-degree-mountain-bike](https://www.desertcart.hr/products/66639147-besnin-31-8-mtb-stem-90mm-45-degree-mountain-bike) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-05*