--- product_id: 415051027 title: "1Pair Bike Handlebar Shim Bicycle Handlebar Stem Shim | Handle Bar Adapter Reducer Aluminum Alloy Clamp Spacer Conversion Shims 25.4 to 31.8MM Cycling Parts Components" brand: "saipor" price: "€ 14.71" currency: EUR in_stock: true reviews_count: 8 category: "Saipor" url: https://www.desertcart.sk/products/415051027-1pair-bike-handlebar-shim-bicycle-handlebar-stem-shim-handle-bar store_origin: SK region: Slovakia --- # Lightweight & corrosion-resistant Anti-slip wavy surface design High-strength aluminum alloy 1Pair Bike Handlebar Shim Bicycle Handlebar Stem Shim | Handle Bar Adapter Reducer Aluminum Alloy Clamp Spacer Conversion Shims 25.4 to 31.8MM Cycling Parts Components **Brand:** saipor **Price:** € 14.71 **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade your ride with precision and style — don’t get left behind! ## Quick Answers - **What is this?** 1Pair Bike Handlebar Shim Bicycle Handlebar Stem Shim | Handle Bar Adapter Reducer Aluminum Alloy Clamp Spacer Conversion Shims 25.4 to 31.8MM Cycling Parts Components by saipor - **How much does it cost?** € 14.71 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/415051027-1pair-bike-handlebar-shim-bicycle-handlebar-stem-shim-handle-bar) ## Best For - saipor enthusiasts ## Why This Product - Trusted saipor brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek CNC Finish:** Anodized with vibrant colors and smooth edges for a stylish, professional look. - • **Enhanced Grip Design:** Wavy surface boosts friction, ensuring a secure, slip-free ride every time. - • **Precision Fit Adapter:** Seamlessly converts 25.4mm handlebars to 31.8mm stems for ultimate compatibility. - • **Durable Aluminum Alloy:** Crafted from corrosion-resistant, lightweight aluminum for long-lasting performance. - • **Quick & Easy Installation:** Snap-in design lets you upgrade your bike setup in seconds—no hassle, no tools. ## Overview This 1Pair Bike Handlebar Shim is a premium aluminum alloy adapter that converts 25.4mm handlebars to fit 31.8mm stems. Featuring a wavy anti-slip design and anodized CNC finish, it offers durability, enhanced grip, and a sleek look. Lightweight and corrosion-resistant, it installs quickly to elevate your cycling experience with professional-grade compatibility and style. ## Description Apply to:If your handlebar diameter is 25.4mm and the stem diameter is 31.8mm, then you can use "25.4 to 31.8MM" handlebar shim as a conversion.Description:1. Forged From High-Strength Aluminum Alloy, High Strength And Corrosion Resistance2. The product adopts corrugated design for better anti-skid3. This reducer allows you to use standard size handlebars of smaller diameter on a large shank.4. Great replacement gear accessories for bike cycling enthusiasts.Specification:Material: Aluminum alloySpecifications: 25.4 to 31.8mmColor: BlackQuantity: 1pairPackage includes:1pair x Bike Handlebar Conversion Shim Review: Works - Did what it should, works fine. Review: As described - As described ## Features - 【Material】Made of aluminium alloy material, very lightweight, not easy to rust or fade, corrosion resistant and durable. - 【Wavy Design】The wavy design on the surface not only does not damage the handlebars and stems, but also increases the friction of the product. Increase riding safety protection. - 【Styling】CNC cutting with smooth surface and edges; the surface is anodized with bright colors and luster, making your bike more cool and fashion. - 【Easy to install】Installation is simple and quick, directly buckled in the handlebar installation position. - 【Application】 This reducer allows you to use smaller diameter standard size handlebars in an oversize stem. If your handlebar diameter is 25.4mm and the stem diameter is 31.8mm, then you can use "25.4 to 31.8MM" handlebar shim as a conversion. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09TD98F2Y | | Best Sellers Rank | 12,527 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 11 in Cycling Stems | | Brand | Saipor | | Brand Name | Saipor | | Colour | Black | | Country Of Origin | China | | Customer Reviews | 4.6 out of 5 stars 110 Reviews | | Item Weight | 0.02 Kilograms | | Item weight | 0.02 Kilograms | | Manufacturer | Saipor | | Material | Aluminium | | Material Type | Aluminium | | Unit Count | 1 count | | Unit count | 1 count | ## Product Details - **Brand:** Saipor - **Colour:** Black - **Item weight:** 0.02 Kilograms - **Manufacturer:** Saipor - **Material:** Aluminium ## Images ![1Pair Bike Handlebar Shim Bicycle Handlebar Stem Shim | Handle Bar Adapter Reducer Aluminum Alloy Clamp Spacer Conversion Shims 25.4 to 31.8MM Cycling Parts Components - Image 1](https://m.media-amazon.com/images/I/61NVMKJ3Z2L.jpg) ![1Pair Bike Handlebar Shim Bicycle Handlebar Stem Shim | Handle Bar Adapter Reducer Aluminum Alloy Clamp Spacer Conversion Shims 25.4 to 31.8MM Cycling Parts Components - Image 2](https://m.media-amazon.com/images/I/61ANsx3L5WL.jpg) ![1Pair Bike Handlebar Shim Bicycle Handlebar Stem Shim | Handle Bar Adapter Reducer Aluminum Alloy Clamp Spacer Conversion Shims 25.4 to 31.8MM Cycling Parts Components - Image 3](https://m.media-amazon.com/images/I/61UXKNgbwZL.jpg) ![1Pair Bike Handlebar Shim Bicycle Handlebar Stem Shim | Handle Bar Adapter Reducer Aluminum Alloy Clamp Spacer Conversion Shims 25.4 to 31.8MM Cycling Parts Components - Image 4](https://m.media-amazon.com/images/I/61KN8yi4a4L.jpg) ![1Pair Bike Handlebar Shim Bicycle Handlebar Stem Shim | Handle Bar Adapter Reducer Aluminum Alloy Clamp Spacer Conversion Shims 25.4 to 31.8MM Cycling Parts Components - Image 5](https://m.media-amazon.com/images/I/61yPF6IyDpL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works *by K***R on 5 August 2025* Did what it should, works fine. ### ⭐⭐⭐⭐⭐ As described *by A***Y on 27 July 2026* As described ### ⭐⭐⭐⭐⭐ Good shims *by T***N on 24 June 2026* They are good. Used them for my son’s frog bike as most of the handle hight extenders are set for larger handle bars. Fitting was easy and it holds the handle in place well ## Frequently Bought Together - Saipor 1Pair Bike Handlebar Shim Bicycle Handlebar Stem Shim Handle Bar Adapter Reducer Aluminum Alloy Clamp Spacer Conversion Shims 25.4 to 31.8MM Cycling Parts Components - 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 - JUPSK 31.8mm Bike Stem, Cycling Bike Stem Short Handlebar Stem Lightweight MTB Stem for Most Bicycle Road Bike BMX MTB --- ## 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.sk/products/415051027-1pair-bike-handlebar-shim-bicycle-handlebar-stem-shim-handle-bar](https://www.desertcart.sk/products/415051027-1pair-bike-handlebar-shim-bicycle-handlebar-stem-shim-handle-bar) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-08-02*