--- product_id: 109144404 title: "Silver Spring loaded chain tensioner for 49cc 50cc 66cc 80cc Engine Motorized bike" brand: "sthus" price: "3474 som" currency: KGS in_stock: true reviews_count: 13 category: "Sthus" url: https://www.desertcart.kg/products/109144404-silver-spring-loaded-chain-tensioner-for-49cc-50cc-66cc-80cc store_origin: KG region: Kyrgyzstan --- # Spring-loaded automatic tension Fits 49cc-80cc motorized bikes 500 lbs tensile strength Silver Spring loaded chain tensioner for 49cc 50cc 66cc 80cc Engine Motorized bike **Brand:** sthus **Price:** 3474 som **Availability:** ✅ In Stock ## Summary > ⚙️ Keep your chain tight, your ride smoother, and your crew impressed! ## Quick Answers - **What is this?** Silver Spring loaded chain tensioner for 49cc 50cc 66cc 80cc Engine Motorized bike by sthus - **How much does it cost?** 3474 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/109144404-silver-spring-loaded-chain-tensioner-for-49cc-50cc-66cc-80cc) ## Best For - sthus enthusiasts ## Why This Product - Trusted sthus brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ride Confidently:** Eliminate chain slippage and stretching, so you can focus on the thrill of the ride without maintenance worries. - • **Durable Metal Build:** Crafted from high-quality metal to withstand up to 500 lbs tensile strength for long-lasting performance. - • **Universal Fit Range:** Compatible with 49cc, 50cc, 66cc, and 80cc engine motorized bikes for versatile upgrades. - • **Precision Chain Control:** Spring-loaded design keeps your chain perfectly tensioned, preventing slack and stretch. - • **Quick & Easy Installation:** Get your chain tension optimized in just 10 minutes—no special tools or expertise needed. ## Overview The sthus Silver Spring Loaded Chain Tensioner is a robust metal component designed for motorized bikes with 49cc to 80cc engines. Featuring a spring-loaded mechanism and a tensile strength of 500 lbs, it ensures optimal chain tension to prevent stretching and slippage. Easy to install in about 10 minutes, this tensioner enhances drivetrain reliability and extends chain life, making it a must-have upgrade for serious riders. ## Description Product description Review: needs a difrent load spring. - works good but need to use 2 springs to keep tension or a different load spring all together. Review: Good Product , only took me about 10 minutes to install ! - Awesome keeps my chain snug not tight to keep it from stretching , also means I don't have to cut link's from chain stretching ! Good Job on this product , Thank You ! ## Features - Fitment: Chain Tensioner Spring Loaded For 49cc 50cc 66cc 80cc Engine Motorized Bike - Package Includ: 1 Chain Tensioner Kit - motorized bike chain tensioner - 80cc bike chain tensioner ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07NXYB2B2 | | Best Sellers Rank | #410,757 in Automotive ( See Top 100 in Automotive ) #105 in Powersports Chain & Sprocket Kits | | Brand | sthus | | Brand Name | sthus | | Customer Reviews | 4.1 out of 5 stars 615 Reviews | | Load Capacity | 5E+2 lbf | | Manufacturer | sthus | | Material | Metal | | Material Type | Metal | | Model | AMWZ_MZ0052 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | AMWZ_MZ0052 | | Tensile Strength | 500 Pounds | | Unit Count | 1.0 Count | ## Product Details - **Brand:** sthus - **Load Capacity:** 5E+2 lbf - **Material:** Metal - **Tensile Strength:** 500 Pounds ## Images ![Silver Spring loaded chain tensioner for 49cc 50cc 66cc 80cc Engine Motorized bike - Image 1](https://m.media-amazon.com/images/I/61iapcHrp-L.jpg) ![Silver Spring loaded chain tensioner for 49cc 50cc 66cc 80cc Engine Motorized bike - Image 2](https://m.media-amazon.com/images/I/71dozBdZV5L.jpg) ![Silver Spring loaded chain tensioner for 49cc 50cc 66cc 80cc Engine Motorized bike - Image 3](https://m.media-amazon.com/images/I/71Fc35GM3UL.jpg) ![Silver Spring loaded chain tensioner for 49cc 50cc 66cc 80cc Engine Motorized bike - Image 4](https://m.media-amazon.com/images/I/81RAUFr3mmL.jpg) ![Silver Spring loaded chain tensioner for 49cc 50cc 66cc 80cc Engine Motorized bike - Image 5](https://m.media-amazon.com/images/I/81t4WFaMXgL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ needs a difrent load spring. *by P***8 on March 31, 2025* works good but need to use 2 springs to keep tension or a different load spring all together. ### ⭐⭐⭐⭐⭐ Good Product , only took me about 10 minutes to install ! *by N***O on October 12, 2019* Awesome keeps my chain snug not tight to keep it from stretching , also means I don't have to cut link's from chain stretching ! Good Job on this product , Thank You ! ### ⭐⭐⭐⭐ You have to have the wide pedal cranks or you can't use it. And possibly a stronger spring. *by F***U on September 11, 2019* It's fairly simple to install but I felt they stamped the parts out the wrong way as the nice side was against the casing and the rough side was facing outward, otherwise it needed to have two washers for the roller so that it didn't drag the whole wheel and end up with wear spots on the pulley wheel, but I had some , also the Allen head bolts stick out so if you plan on this application you will need the extra wide pedals or you can't pedal as the pedal arm hits the bolts of the chain tensioner ## Frequently Bought Together - Sthus Silver Spring loaded chain tensioner for 49cc 50cc 66cc 80cc Engine Motorized bike - HILAKE 415 Motorcyle Chain 110 Links Non O-Ring with Connecting Master Link and Chain Breaker Heavy Duty Drive Chain for Motorcycle Bicycle Go Kart Mini Trail Bike - jtfrkope 3 pcs Pulley Chain Tensioner Roller For 49cc 60cc 66cc 80cc Motorized Bicycle Bike --- ## 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.kg/products/109144404-silver-spring-loaded-chain-tensioner-for-49cc-50cc-66cc-80cc](https://www.desertcart.kg/products/109144404-silver-spring-loaded-chain-tensioner-for-49cc-50cc-66cc-80cc) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-05-20*