{"product_id":"qymoto-3-4-centrifugal-clutch-for-mini-bikes-go-karts-10t-sprocket-40-41-420-chain-fits-3-4-19mm-shaft","title":"QYMOTO 3\/4\" Centrifugal Clutch for Mini Bikes \u0026 Go-Karts — 10T Sprocket, 40\/41\/420 Chain, Fits 3\/4\" (19mm) Shaft","description":"\u003cp\u003e\u003cstrong\u003eQYMOTO 3\/4\" centrifugal clutch with a 10-tooth sprocket delivers a direct, bolt-on replacement for many 2–7 HP small engines using 40\/41\/420 chain.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis QYMOTO clutch is a compact, centrifugal unit designed to transfer power from popular small engines (including Predator 212 clones) to a 40\/41\/420 chain-driven drivetrain. It fits a 3\/4\" (19mm) shaft and is commonly used on minibikes, go-karts and utility machines rated up to roughly 7 HP. The clutch provides automatic engagement as RPM rises, simplifying installation and operation compared with belt-driven systems.\u003c\/p\u003e\n\n\u003ch3\u003eWill this clutch fit my engine and shaft?\u003c\/h3\u003e\n\n\u003cp\u003eThe QYMOTO clutch is built for a 3\/4\" (19mm) shaft — confirm your crankshaft diameter before ordering. It is compatible with many cloned and OEM small engines (GC160\/GC190\/GX120\/GX140\/GX160\/GX200 and similar), and commonly pairs with Predator 212-style engines that use a 3\/4\" shaft.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e3\/4\" (19mm) bore — not compatible with 16mm cranks like some Hisun engines.\u003c\/li\u003e\n  \u003cli\u003eDesigned for 2–7 HP engines; typical safe operating RPM ~2300.\u003c\/li\u003e\n  \u003cli\u003eCheck engine model\/specs or measure crankshaft to confirm fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does it affect performance and drivability?\u003c\/h3\u003e\n\n\u003cp\u003eThis centrifugal clutch engages automatically as engine RPM increases, allowing smooth takeoff without a manual clutch lever. It is suitable for recreational and light-duty applications where on-demand engagement and simple drivetrain layout are priorities.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e10-tooth sprocket matched for 40\/41\/420 chain sizes.\u003c\/li\u003e\n  \u003cli\u003eAutomatic engagement gives predictable start-up motion and reduced stalling.\u003c\/li\u003e\n  \u003cli\u003eRated for small engines up to about 7 HP for reliable load handling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I know about installation and maintenance?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is straightforward: slide the clutch onto the 3\/4\" shaft, secure per your engine’s specification, and tension the chain to the recommended slack. Before first use, add a small amount of oil into the clutch as directed to ensure proper lubrication and reduce initial wear.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOne-piece centrifugal clutch (3\/4\" bore) — includes 10T sprocket for 40\/41\/420 chain.\u003c\/li\u003e\n  \u003cli\u003eAdd oil to the clutch before first operation to lubricate internal components.\u003c\/li\u003e\n  \u003cli\u003eVerify keyway alignment and torque fasteners to engine manufacturer specs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich machines commonly use this clutch?\u003c\/h3\u003e\n\n\u003cp\u003eThis clutch appears on many minibikes and go-karts and is often used as a replacement part for specific models. It is a common swap for machines that originally used similar centrifugal clutches with a 3\/4\" shaft and 10T sprocket geometry.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMinibikes: Baja MB165, MB200 and other small-frame models.\u003c\/li\u003e\n  \u003cli\u003eGo-karts and off-road utility machines like Coleman BT200X variants (check shaft size first).\u003c\/li\u003e\n  \u003cli\u003eWorks with many small-engine conversions using Predator 212-style or clone engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This QYMOTO centrifugal clutch is aimed at DIY mechanics, minibike and go-kart owners, and small-engine hobbyists who need a reliable, automatic-engaging sprocket clutch for 40\/41\/420 chain drivetrains. It’s well suited for replacements or upgrades when your machine uses a 3\/4\" shaft and requires a 10-tooth sprocket; however, it is not appropriate for machines with a 16mm crankshaft or applications beyond the recommended horsepower range. Always confirm shaft diameter and engine compatibility before purchasing.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this clutch fit a Coleman CT200U?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits Coleman CT200U models only if the engine uses a 3\/4\" shaft; many CT200U variants have a 16mm crank and are incompatible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to add oil before using the clutch?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — add oil to the clutch before first use to lubricate internal parts and reduce wear during break-in.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"QYMOTO","offers":[{"title":"Default Title","offer_id":48086160605342,"sku":"B0CHFLYYTM","price":42.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/qymoto-front-view-clutch_ac6696b6-1735-4439-b226-304a4657203d.jpg?v=1785887596","url":"https:\/\/northtrailauto.ca\/products\/qymoto-3-4-centrifugal-clutch-for-mini-bikes-go-karts-10t-sprocket-40-41-420-chain-fits-3-4-19mm-shaft","provider":"North Trail Auto","version":"1.0","type":"link"}