--- product_id: 63904026 title: "31.8 Bike Stem 35 Degree 70mm 90mm 110mm Bicycle Handlebar Stem Riser for 1.25\" Handlebar Mountain Bike Road Bike MTB BMX..." brand: "fomtor" price: "$46.62" currency: USD in_stock: true reviews_count: 13 category: "Fomtor" url: https://www.desertcart.us/products/63904026-31-8-bike-stem-35-degree-70mm-90mm-110mm-bicycle store_origin: US region: United States of America --- # Available in 70mm, 90mm, 110mm lengths 35° angle for ergonomic handlebar positioning CNC machined 6061 T6 aluminum 31.8 Bike Stem 35 Degree 70mm 90mm 110mm Bicycle Handlebar Stem Riser for 1.25" Handlebar Mountain Bike Road Bike MTB BMX... **Brand:** fomtor **Price:** $46.62 **Availability:** ✅ In Stock ## Summary > 🚴‍♂️ Elevate your ride, dominate every trail with precision and style! ## Quick Answers - **What is this?** 31.8 Bike Stem 35 Degree 70mm 90mm 110mm Bicycle Handlebar Stem Riser for 1.25" Handlebar Mountain Bike Road Bike MTB BMX... by fomtor - **How much does it cost?** $46.62 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/63904026-31-8-bike-stem-35-degree-70mm-90mm-110mm-bicycle) ## Best For - fomtor enthusiasts ## Why This Product - Trusted fomtor brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Customizable Fit:** Choose from three stem lengths (70mm, 90mm, 110mm) to perfectly tailor your bike’s handlebar height and reach. - • **Ergonomic 35° Angle:** Optimizes your riding posture by raising or lowering the handlebar, reducing hand fatigue and enhancing control. - • **Effortless Installation:** Four-bolt clamp system ensures a secure grip and quick setup—upgrade your ride in minutes without hassle. - • **Precision CNC Aluminum Build:** Crafted from high-strength 6061 T6 aluminum for unmatched durability and featherlight weight at just 140g. - • **Universal Compatibility for 31.8mm Handlebars:** Designed exclusively for 31.8mm diameter handlebars, fitting most mountain, road, BMX, and track bikes seamlessly. ## Overview The FOMTOR 31.8 Bike Stem is a lightweight, durable handlebar riser crafted from CNC machined 6061 T6 aluminum. Available in 70mm, 90mm, and 110mm lengths with a 35° angle, it’s engineered to optimize handlebar height and rider comfort. Designed exclusively for 31.8mm handlebars and 28.6mm fork stems, it fits a wide range of bikes including mountain, road, BMX, and track. Easy to install with a secure four-bolt clamp, this stem enhances control and reduces hand fatigue for a superior cycling experience. ## Description Buy Bike Stem 31.8mm 35 Degree 70mm FOMTOR Bicycle Handlebar Stem Riser Suitable for BMX MTB Road Bike Mountain Bike (31.8 x 70mm): Stems - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Fantastic quality bike Riser - This bike riser was easy to install. It is strong and durable. Great value for the money. This bike riser raises handlebars just enough to minimize nerve damage to hands but not so much as to require re-doing brakes. Review: Really good!!!! - Really great product. I ordered one but can not install due to wrong size I ordered. Quality seems top notch and finish quality is amazing. Had to return. Will order different size. ## Features - !!! NOTE (very important) : This mountin bike mtb stem ONLY fit for 31.8mm handlebar! Other handlebar is NOT applicable！Handlebar diameter 31.8mm (1.25''), front fork stem diameter 28.6mm (1-1/8"), Length: 70mm (center distance of the two holes) - Angle: 35 degree. Help to up or down the heigth of handlebar. - Light weight and durable. Weight. Only 140g(0.3lb) , - Constructed of high-strength CNC machined 6061 T6 aluminum alloy. - Suitable for most road bike, mountain bikes, track bike, MTB, BMX, DH, etc. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07C2KDXB6 | | Best Sellers Rank | #61,437 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #42 in Bike Stems | | Bike Type | BMX Bike, Mountain Bike, Road Bike | | Brand Name | FOMTOR | | Color | 31.8 x 70mm | | Customer Reviews | 4.7 4.7 out of 5 stars (1,596) | | Included Components | No | | Item Dimensions L x W | 2.76"L x 1.25"W | | Item Weight | 140 Grams | | Manufacturer | FOMTOR | | Material Type | Aluminum | ## Product Details - **Brand:** FOMTOR - **Color:** 31.8 x 70mm - **Item Weight:** 140 Grams - **Material:** Aluminum - **Product Dimensions:** 2.76"L x 1.25"W ## Images ![31.8 Bike Stem 35 Degree 70mm 90mm 110mm Bicycle Handlebar Stem Riser for 1.25" Handlebar Mountain Bike Road Bike MTB BMX... - Image 1](https://m.media-amazon.com/images/I/414DjhTp3jL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fantastic quality bike Riser *by J***R on August 9, 2024* This bike riser was easy to install. It is strong and durable. Great value for the money. This bike riser raises handlebars just enough to minimize nerve damage to hands but not so much as to require re-doing brakes. ### ⭐⭐⭐⭐⭐ Really good!!!! *by P***Y on July 19, 2025* Really great product. I ordered one but can not install due to wrong size I ordered. Quality seems top notch and finish quality is amazing. Had to return. Will order different size. ### ⭐⭐⭐⭐⭐ Fixed my Trek X-caliber 8!!! *by Z***H on March 23, 2025* Bought a frame size XL but really should have bought a L. I am 6'1 with a 31 inch inseam and on my XL Trek X Caliber 8 bike, the reach was a bit much putting way too much weight on my wrists and made for a uncomfortable ride. Asked Chat GPT how to fix it, and it recommended replacement of the stem. Found this, looked about what I needed, shorter and taller, put it on and WOW! Now I am more upright and comfortable and feel that the XL frame is PERFECT! If you end up buying a bike that may be a tad big, give this thing a shot, made a WORLD of difference. Install is very easy with basic hand tools. --- ## 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.us/products/63904026-31-8-bike-stem-35-degree-70mm-90mm-110mm-bicycle](https://www.desertcart.us/products/63904026-31-8-bike-stem-35-degree-70mm-90mm-110mm-bicycle) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-16*