--- product_id: 490147776 title: "Bike Stem 31.8mm 35Degree, Aluminum Alloy MTB Stem Riser Bicycle Handlebar Stem for BMX Road Bike Mountain Bike" brand: "plattbk" price: "138 zł" currency: PLN in_stock: true reviews_count: 8 url: https://www.desertcart.pl/products/490147776-bike-stem-31-8mm-35degree-aluminum-alloy-mtb-stem-riser store_origin: PL region: Poland --- # ±35° adjustable handlebar angle Four-bolt secure clamp system CNC machined 6061 T6 aluminum alloy Bike Stem 31.8mm 35Degree, Aluminum Alloy MTB Stem Riser Bicycle Handlebar Stem for BMX Road Bike Mountain Bike **Brand:** plattbk **Price:** 138 zł **Availability:** ✅ In Stock ## Summary > 🚴‍♂️ Elevate Your Ride, Own the Road ## Quick Answers - **What is this?** Bike Stem 31.8mm 35Degree, Aluminum Alloy MTB Stem Riser Bicycle Handlebar Stem for BMX Road Bike Mountain Bike by plattbk - **How much does it cost?** 138 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/490147776-bike-stem-31-8mm-35degree-aluminum-alloy-mtb-stem-riser) ## Best For - plattbk enthusiasts ## Why This Product - Trusted plattbk brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Installation:** Four-bolt clamp design ensures a rock-solid grip and quick setup—no mechanic needed. - • **Customizable Ride Comfort:** Adjust your handlebar angle up or down by 35° to relieve shoulder and back strain on every ride. - • **Upgrade Your Cycling Game:** Transform your bike’s ergonomics and style with a sleek, anodized aluminum stem riser that stands out on any trail or street. - • **Versatile Fit for Every Bike:** Available in multiple lengths (60-120mm) and fits 31.8mm handlebars and 28.6mm steerer tubes, perfect for MTB, BMX, road, and more. - • **Precision Engineered Durability:** Crafted from aerospace-grade 6061 T6 aluminum for unmatched strength and featherlight weight. ## Overview This Bike Stem features a CNC machined 6061 T6 aluminum alloy construction for superior strength and lightweight performance. With a ±35° adjustable angle, it offers customizable handlebar positioning to reduce rider fatigue. Designed for easy installation with a secure four-bolt clamp, it fits 31.8mm handlebars and 28.6mm steerer tubes, making it compatible with a wide range of bikes including MTB, BMX, and road bikes. ## Description Bike Stem 31.8mm 35Degree, Aluminum Alloy MTB Stem Riser Bicycle Handlebar Stem for BMX Road Bike Mountain Bike ## Features - 【MATERIAL】This Mountain Bike Stem is constructed from CNC machined 6061 T6 aluminum alloy ensuring it is incredibly durable,lightweight and strong. - 【ANGLE】+/- 35 degree,you can up or down the heigth of your handlebar,perfect angle,It helps to relieve the pressure of your shoulder and back, and bring you enjoyable and relaxed cycling experience. - 【EASY TO INSTALL】 just connect up the original front fork stem. Four bolt bar clamp holds bar securely in position. - 【SIZE】 Length:60/70/80/90/100/110/120mm;Clamp Diameter: 31.8mm ; Steerer Clamp: 28.6mm(1-1/8”) - 【USE】Suitable for Road bike, MTB,TT bike, track bike,BMX, DH, etc. ## Technical Specifications | Specification | Value | |---------------|-------| | Color | 31.8x60mm | | Batteries included? | No | | Brand | PLATTBK | | Manufacturer | PLATTBK | | Package Dimensions | 15.2 x 9 x 5.5 cm; 120 g | | ASIN | B09ZTQDCC6 | ## Images ![Bike Stem 31.8mm 35Degree, Aluminum Alloy MTB Stem Riser Bicycle Handlebar Stem for BMX Road Bike Mountain Bike - Image 1](https://m.media-amazon.com/images/I/61F6t3ad3oL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works well *by A***H on 28 June 2025* Good quality handlebar stem ### ⭐⭐⭐⭐⭐ Good build quality and sturdy. *by E***Y on 21 May 2025* Wanted a shorter stem for a new gravel bike. Absolutely excellent. Shortens my reach and made for comfortable riding. Excellent build quality. ### ⭐⭐⭐⭐ Good quality and works fine 👍 *by M***X on 14 June 2024* Decent casting and fitted fine. One thread was slightly iffy and stiff but running the bolt through a few times sorted that. ## Frequently Bought Together - PLATTBK Bike Stem 31.8mm 35Degree, Aluminum Alloy MTB Stem Riser Bicycle Handlebar Stem for BMX Road Bike Mountain Bike - GoHZQ 6 Pcs Headset Spacers 1 1/8", Aluminium Alloy Headset Spacers for Bikes, 28.6mm MTB Road Bike Stem Spacers 2mm/3mm/5mm/3x10mm Black - LERWAY Bike Stem Riser Extender MTB Handlebar Stem Adapter with Hex Key for 1-1/8" 28.6mm fork Aluminum Black --- ## 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.pl/products/490147776-bike-stem-31-8mm-35degree-aluminum-alloy-mtb-stem-riser](https://www.desertcart.pl/products/490147776-bike-stem-31-8mm-35degree-aluminum-alloy-mtb-stem-riser) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-08*