{"product_id":"off-road-motorcycle-crankshaft-assembly","title":"Off-Road Motorcycle Crankshaft Assembly with Connecting Rod – Dirt Bike Engine Parts","description":"\u003ch2\u003eOff-Road Motorcycle Crankshaft Assembly\u003c\/h2\u003e\n\u003cp\u003eThis off-road motorcycle crankshaft assembly is a complete crankshaft and connecting rod unit for rebuilding the bottom end of an off-road or dirt bike engine. As shown in the product photos, it comes assembled, with full-circle flywheels, the connecting rod already fitted, and machined main shafts on both sides. Easy Life Markets sells it for riders and workshops who need a replacement crank for a worn, noisy or seized engine.\u003c\/p\u003e\n\n\u003cp\u003eThe crankshaft turns the up-and-down movement of the piston into rotation, and in an off-road engine it works at high revs with a lot of shock loading from jumps and rough terrain. Over time, the big-end bearing on the connecting rod wears, the flywheels can shift out of true, and the main bearings suffer. When that happens, replacing the whole \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Crankshaft\" target=\"_blank\" rel=\"noopener\"\u003ecrankshaft\u003c\/a\u003e assembly is usually more reliable than repairing the old one.\u003c\/p\u003e\n\n\u003ch2\u003eWhat Is Included\u003c\/h2\u003e\n\u003cp\u003eThe supplier's packing list describes the item as one engine part. As pictured, the listing shows:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x crankshaft assembly with connecting rod\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe photos also show a ball bearing and two small keys next to the crankshaft. Because the packing list does not mention them, please \u003ca href=\"\/pages\/contact\"\u003econtact us\u003c\/a\u003e if you need to confirm whether they are supplied before you order.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Motorcycle crankshaft and connecting rod assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eListed application:\u003c\/strong\u003e Off-road motorcycle engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Engine component\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e CJYD293606102BY\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChecking Fitment\u003c\/h2\u003e\n\u003cp\u003eThe supplier does not list a brand, model, engine size or part number for this crankshaft. Off-road motorcycle crankshafts vary widely in stroke, shaft length, taper, thread size and connecting rod length, even between engines of the same size. It is essential to compare this part with your own before ordering:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure your old crankshaft:\u003c\/strong\u003e overall length, flywheel diameter and width, and the length of each main shaft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the ends:\u003c\/strong\u003e taper, keyway position and thread size on the ignition side, and splines or threads on the primary drive side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the connecting rod:\u003c\/strong\u003e center-to-center length and small-end diameter (to match your piston pin).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompare the photos\u003c\/strong\u003e with your part from several angles.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eSend your measurements, engine model and photos to us through our \u003ca href=\"\/pages\/contact\"\u003econtact page\u003c\/a\u003e and we will help you compare before you buy.\u003c\/p\u003e\n\n\u003ch2\u003eSigns the Crankshaft Needs Replacing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eKnocking or rattling from the bottom end, especially under load\u003c\/li\u003e\n\u003cli\u003eUp-and-down play in the connecting rod big end\u003c\/li\u003e\n\u003cli\u003eExcessive vibration through the footpegs and bars\u003c\/li\u003e\n\u003cli\u003eDamage after an engine seizure or a broken piston\u003c\/li\u003e\n\u003cli\u003eWorn tapers, keyways or threads on the crankshaft ends\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRebuild Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eReplacing the crankshaft means splitting the crankcases, so plan a full bottom-end rebuild.\u003c\/li\u003e\n\u003cli\u003eFit new main bearings and crankshaft seals. On two-stroke engines, the seals are critical for crankcase pressure.\u003c\/li\u003e\n\u003cli\u003eCheck the crankshaft runout on V-blocks with a dial gauge before fitting, and follow the specification in your service manual.\u003c\/li\u003e\n\u003cli\u003eUse the correct crankcase splitting and crankshaft installation tools to avoid knocking the crankshaft out of true.\u003c\/li\u003e\n\u003cli\u003eInspect the piston, cylinder, gearbox bearings and clutch while the engine is apart.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Replace the Complete Assembly\u003c\/h2\u003e\n\u003cp\u003eRebuilding an old crankshaft means pressing it apart, fitting a new rod and bearing, and truing the flywheels, which needs special tools and experience. A complete assembly arrives ready to fit, which saves time and reduces the chance of errors. It is often the practical choice for riders who want their bike back on the trail quickly.\u003c\/p\u003e\n\n\u003ch2\u003eLooking After the New Crankshaft\u003c\/h2\u003e\n\u003cp\u003eFor two-stroke engines, always use the correct fuel and oil mix, fresh fuel and a clean air filter, since a lean mixture or dirt entering the engine quickly damages bearings. For four-stroke engines, change the oil regularly and keep the level correct. Follow a gentle break-in period after the rebuild before riding hard.\u003c\/p\u003e\n\n\u003ch2\u003eWho This Part Is For\u003c\/h2\u003e\n\u003cp\u003eThis crankshaft assembly suits motorcycle workshops, experienced riders who rebuild their own engines, and anyone who has matched it carefully with the original crankshaft from their off-road bike.\u003c\/p\u003e\n\n\u003ch2\u003eCommon Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhich bikes does it fit?\u003c\/strong\u003e The supplier does not give specific models, so fit must be confirmed by comparing measurements and photos with your old crankshaft.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it for a two-stroke or four-stroke engine?\u003c\/strong\u003e The listing does not say. Please compare the design with your original part or ask us before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eBuy the Off-Road Motorcycle Crankshaft Assembly at Easy Life Markets\u003c\/h2\u003e\n\u003cp\u003eYou can order this crankshaft assembly 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\/yamaha-yz125-full-gasket-kit\"\u003eYamaha YZ125 full gasket kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/yamaha-pw50-60cc-big-bore-kit\"\u003eYamaha PW50 60cc big bore kit\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\/ms440-chainsaw-crankshaft\"\u003eMS440 chainsaw crankshaft\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse our \u003ca href=\"\/collections\/crankshafts\"\u003ecrankshafts collection\u003c\/a\u003e and \u003ca href=\"\/collections\/engine-parts\"\u003eengine parts\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Photos\u003c\/h2\u003e\n\u003cp\u003e\n\u003cimg src=\"https:\/\/oss-cf.cjdropshipping.com\/product\/2026\/06\/16\/03\/3ccfa9b3-11cf-424a-bafd-5329020a6dc1_fine.jpeg\" alt=\"Off-road motorcycle crankshaft assembly\" style=\"max-width:100%;\"\u003e\n\u003cimg src=\"https:\/\/oss-cf.cjdropshipping.com\/product\/2026\/06\/16\/03\/6ab03a97-7e34-4a1a-a109-11755372cb77.jpg\" alt=\"Off-road motorcycle crankshaft assembly detail\" style=\"max-width:100%;\"\u003e\n\u003cimg src=\"https:\/\/oss-cf.cjdropshipping.com\/product\/2026\/06\/16\/03\/5834f773-a40d-4d80-a8be-f43dda919697.jpg\" alt=\"Off-road motorcycle crankshaft assembly detail\" style=\"max-width:100%;\"\u003e\n\u003cimg src=\"https:\/\/oss-cf.cjdropshipping.com\/product\/2026\/06\/16\/03\/d456720e-c533-46b4-a720-73151ed3a439.jpg\" alt=\"Off-road motorcycle crankshaft assembly detail\" style=\"max-width:100%;\"\u003e\n\u003cimg src=\"https:\/\/oss-cf.cjdropshipping.com\/product\/2026\/06\/16\/03\/1ce5de4e-540b-4574-8801-e03a784f0e94.jpg\" alt=\"Off-road motorcycle crankshaft assembly detail\" style=\"max-width:100%;\"\u003e\n\u003c\/p\u003e","brand":"easylife markets","offers":[{"title":"Engine Part","offer_id":46969699172513,"sku":"CJYD293606102BY","price":901.91,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0751\/2086\/9537\/files\/badd896f-9baf-4242-b7ad-66384a589dcc.jpg?v=1788567641","url":"https:\/\/easylifemarketplace.com\/products\/off-road-motorcycle-crankshaft-assembly","provider":"Easy Life Markets","version":"1.0","type":"link"}