{"product_id":"go-kart-centrifugal-clutch-20mm-12t","title":"Go Kart Centrifugal Clutch 20 mm 12T – Micro Bike \u0026 Kart Motorcycle Centrifugal Clutch, Model 1021","description":"\u003ch2\u003eGo Kart Centrifugal Clutch – 20 mm Bore, 12 Tooth\u003c\/h2\u003e\n\u003cp\u003eThis go kart centrifugal clutch has a 20 mm bore and a 12-tooth sprocket, and is made for small engines on go-karts, mini bikes and similar small-engine projects. It is listed as model 1021. The clutch bolts onto the engine's output shaft and sits in line with the chain, as shown in the photo of it fitted to a small engine. Easy Life Markets sells it as a single replacement or upgrade clutch for kart builders and small-engine owners.\u003c\/p\u003e\n\n\u003cp\u003eA centrifugal clutch lets the engine idle without moving the kart, then engages automatically as the engine speeds up. Inside the drum, weighted shoes are held back by springs. As engine speed rises, the shoes swing outward and grip the drum, which turns the sprocket and drives the chain. When the engine slows, the springs pull the shoes back and the clutch disengages. There is no clutch lever or pedal to operate. You can read more about how a \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Centrifugal_clutch\" target=\"_blank\" rel=\"noopener\"\u003ecentrifugal clutch\u003c\/a\u003e works.\u003c\/p\u003e\n\n\u003ch2\u003eWhat Is Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x centrifugal clutch with 12-tooth sprocket, 20 mm bore\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChain, key, bolt, washer and engine are not listed as included.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Centrifugal clutch for go-kart and mini bike engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e 1021\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore (shaft size):\u003c\/strong\u003e 20 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSprocket:\u003c\/strong\u003e 12 teeth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eListed applications:\u003c\/strong\u003e Go-kart, mini bike and small-engine motorcycle projects\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e CJJT156444601AZ\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe dimension picture in the product photos shows the drum and sprocket measurements. One photo also shows a 19 mm version for comparison. The item sold on this page is the \u003cstrong\u003e20 mm, 12-tooth\u003c\/strong\u003e version.\u003c\/p\u003e\n\n\u003ch2\u003eChecking Fitment\u003c\/h2\u003e\n\u003cp\u003eCentrifugal clutches must match the engine's output shaft exactly. Before ordering, please check:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft diameter:\u003c\/strong\u003e measure your engine's crankshaft or output shaft. This clutch has a 20 mm bore and will not fit a 3\/4 inch (19.05 mm) or 19 mm shaft correctly, or a larger 1 inch shaft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeyway:\u003c\/strong\u003e make sure your shaft has a matching keyway and key.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChain size:\u003c\/strong\u003e compare the sprocket teeth with your chain. The supplier does not state the chain pitch, so please compare the sprocket with your existing one or \u003ca href=\"\/pages\/contact\"\u003eask us\u003c\/a\u003e before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGearing:\u003c\/strong\u003e a 12-tooth drive sprocket gives a particular gear ratio with your axle sprocket. Changing the tooth count changes top speed and acceleration.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eSigns Your Clutch Needs Replacing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe kart creeps forward at idle, meaning the clutch is not fully releasing\u003c\/li\u003e\n\u003cli\u003eSlipping, a burning smell or a squealing noise under load\u003c\/li\u003e\n\u003cli\u003eThe engine revs up but the kart is slow to move\u003c\/li\u003e\n\u003cli\u003eWorn or broken springs, or shoes that have worn thin\u003c\/li\u003e\n\u003cli\u003eWorn sprocket teeth or a noisy, wobbling drum\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClean the engine shaft and check it for burrs so the clutch slides on smoothly.\u003c\/li\u003e\n\u003cli\u003eFit the key into the keyway, slide the clutch on, and secure it with the correct bolt and washer.\u003c\/li\u003e\n\u003cli\u003eLine up the clutch sprocket with the axle sprocket so the chain runs straight.\u003c\/li\u003e\n\u003cli\u003eSet the chain tension so there is a little slack, then check that the chain guard is in place.\u003c\/li\u003e\n\u003cli\u003eStart the engine and check that the kart stays still at idle and moves off smoothly as the engine speeds up.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways keep hands and loose clothing away from the chain and clutch while the engine is running.\u003c\/p\u003e\n\n\u003ch2\u003eLooking After a Centrifugal Clutch\u003c\/h2\u003e\n\u003cp\u003eA dry centrifugal clutch works best when it is kept clean and not overheated. Avoid slipping it for long periods, for example by holding a heavy kart on a steep hill at part throttle. Lubricate the bushing as recommended, check the springs and shoes from time to time, and keep the chain adjusted and oiled.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Clutch\u003c\/h2\u003e\n\u003cp\u003eThe 20 mm bore and 12-tooth sprocket make this a common size for small kart and mini bike engines, and the automatic engagement keeps driving simple for beginners and younger riders. It is a straightforward replacement when an old clutch starts slipping or dragging.\u003c\/p\u003e\n\n\u003ch2\u003eChoosing the Right Engagement and Gearing\u003c\/h2\u003e\n\u003cp\u003eCentrifugal clutches engage at a set engine speed determined by their springs and shoe weights. If a clutch engages too low, a heavy kart may bog down; too high, and it can feel jerky. The supplier does not state the engagement speed of this clutch, so if you are replacing an old one that worked well, compare the two before fitting. For gearing, a small 12-tooth drive sprocket paired with a larger axle sprocket gives stronger acceleration and a lower top speed, which suits most off-road karts and mini bikes, especially with heavier riders.\u003c\/p\u003e\n\n\u003ch2\u003eWho This Clutch Is For\u003c\/h2\u003e\n\u003cp\u003eThis clutch suits go-kart and mini bike owners, small-engine hobbyists, and builders putting together a new kart who have confirmed their engine shaft is 20 mm.\u003c\/p\u003e\n\n\u003ch2\u003eCommon Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill it fit a 3\/4 inch shaft?\u003c\/strong\u003e No. This version has a 20 mm bore. Please measure your shaft before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich chain does it use?\u003c\/strong\u003e The supplier does not state the chain size. Compare the sprocket with your current one or contact us to check.\u003c\/p\u003e\n\n\u003ch2\u003eBuy the Go Kart Centrifugal Clutch at Easy Life Markets\u003c\/h2\u003e\n\u003cp\u003eYou can order this go kart centrifugal clutch right here. The current price and availability are shown on this page. Please read our \u003ca href=\"\/pages\/return-refund-policy\"\u003ereturn and refund policy\u003c\/a\u003e before buying.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/italika-80cc-centrifugal-clutch\"\u003eItalika 80cc centrifugal clutch\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/gy6-50cc-80cc-crankshaft\"\u003eGY6 50cc crankshaft\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/off-road-motorcycle-crankshaft-assembly\"\u003eoff-road motorcycle crankshaft assembly\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse our \u003ca href=\"\/collections\/clutches\"\u003eclutches collection\u003c\/a\u003e and \u003ca href=\"\/collections\/auto-parts\"\u003eauto parts\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Photos\u003c\/h2\u003e\n\u003cp\u003e\n\u003cimg src=\"https:\/\/cf.cjdropshipping.com\/472e3112-f627-4f9b-9a29-43f8eabf3e57.jpg\" alt=\"Go kart centrifugal clutch, 20 mm 12 tooth\" style=\"max-width:100%;\"\u003e\n\u003cimg src=\"https:\/\/cf.cjdropshipping.com\/29187968-cc81-41c6-8c0d-c95cb1fca13b.jpg\" alt=\"Go kart centrifugal clutch detail\" style=\"max-width:100%;\"\u003e\n\u003cimg src=\"https:\/\/cf.cjdropshipping.com\/3e089af8-7056-41ff-be2a-e815607725cb.jpg\" alt=\"Go kart centrifugal clutch detail\" style=\"max-width:100%;\"\u003e\n\u003cimg src=\"https:\/\/cf.cjdropshipping.com\/1dde285e-4eca-45c8-8677-8a08db8632d2.jpg\" alt=\"Go kart centrifugal clutch detail\" style=\"max-width:100%;\"\u003e\n\u003cimg src=\"https:\/\/cf.cjdropshipping.com\/d34673a9-d980-488c-986a-c2bf7d42b505.jpg\" alt=\"Go kart centrifugal clutch detail\" style=\"max-width:100%;\"\u003e\n\u003c\/p\u003e","brand":"easylife markets","offers":[{"title":"20MM 12T","offer_id":46971973763233,"sku":"CJJT156444601AZ","price":182.24,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0751\/2086\/9537\/files\/e9d9cfb1-d88b-4079-98b6-d3c72f7b731f.jpg?v=1788594022","url":"https:\/\/easylifemarketplace.com\/products\/go-kart-centrifugal-clutch-20mm-12t","provider":"Easy Life Markets","version":"1.0","type":"link"}