{"product_id":"yamaha-genuine-chappy-lb50-crankcase-2-439-15121-04","title":"Yamaha Genuine Chappy LB50 Crankcase 2 439-15121-04","description":"\u003cp\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0899\/5009\/3636\/files\/download.png?v=1736759431\" alt=\"Yamaha Genuine OEM\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"3\"\u003e\u003cb data-path-to-node=\"3\" data-index-in-node=\"0\"\u003eProduct Description\u003c\/b\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4\"\u003e\u003cspan\u003eBrand new official Yamaha factory right-hand crankcase half designed for classic vintage two-stroke 50cc\/80cc step-through minibikes.\u003c\/span\u003e\u003cspan\u003e Precision-cast and line-bored to exact factory metallurgical and dimensional tolerances,\u003c\/span\u003e\u003cspan\u003e engineered to pair seamlessly with Crankcase 1 during a complete bottom-end engine rebuild to eliminate mechanical play,\u003c\/span\u003e\u003cspan\u003e restore primary compression,\u003c\/span\u003e\u003cspan\u003e and ensure absolute structural alignment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5\"\u003e\u003cb data-path-to-node=\"5\" data-index-in-node=\"0\"\u003eVehicle Compatibility\u003c\/b\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"6\"\u003e\u003cspan\u003eEngineered explicitly for \u003c\/span\u003e\u003cb data-path-to-node=\"6\" data-index-in-node=\"26\"\u003eYamaha classic air-cooled two-stroke Chappy minibike platforms\u003c\/b\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"7\"\u003e\u003cspan\u003eVerified catalog fitment layout:\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable data-path-to-node=\"8\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMake\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Family\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Type \/ Displacement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Years\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,1,0,0\"\u003e\u003cb data-path-to-node=\"8,1,0,0\" data-index-in-node=\"0\"\u003eYamaha\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,1,1,0\"\u003eChappy LB50 \/ LB50-2AM (439 \/ 3WH series)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,1,2,0\"\u003e49cc (2-Stroke Air-Cooled Minibike Single)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,1,3,0\"\u003e1970s–1990s\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,2,0,0\"\u003e\u003cb data-path-to-node=\"8,2,0,0\" data-index-in-node=\"0\"\u003eYamaha\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,2,1,0\"\u003eChappy LB80 \/ LB80-2AM (Related Variants)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,2,2,0\"\u003e72cc (2-Stroke Air-Cooled Minibike Single)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,2,3,0\"\u003eVintage Era\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"9\"\u003e \u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"9\"\u003e\u003cb data-path-to-node=\"9\" data-index-in-node=\"0\"\u003eFitment \u0026amp; Technical Details\u003c\/b\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"10\"\u003e\u003cspan\u003eInspect all internal bearing bores,\u003c\/span\u003e\u003cspan\u003e dowel pin locating surfaces,\u003c\/span\u003e\u003cspan\u003e and gasket mating faces for absolute cleanliness prior to assembly.\u003c\/span\u003e\u003cspan\u003e Because two-stroke crankcases are precision factory-matched pairs,\u003c\/span\u003e\u003cspan\u003e ensure both halves share matching casting serial numbers if replacing as a set,\u003c\/span\u003e\u003cspan\u003e and warm the main bearing housings evenly during crankshaft installation to prevent side-load distortion.\u003c\/span\u003e\u003ci data-path-to-node=\"10\" data-index-in-node=\"386\"\u003eVerification:\u003c\/i\u003e\u003cspan\u003e Mates precisely with the left crankcase half along the center gasket plane with zero offset or bearing bind,\u003c\/span\u003e\u003cspan\u003e maintaining exact alignment for the crankshaft and transmission shafts.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePlease ensure the part number matches your motorbike before purchasing. If you have any questions about the part or its compatibility, feel free to contact us. We’re here to help!\u003c\/p\u003e\n\u003cp\u003eAt\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDmmotorcycles\u003c\/strong\u003e, we’ve specialized in vintage and vintage sports motorcycles and parts directly from Japan since 1998. We stock a wide selection of rare\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003egenuine\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand high-quality\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eaftermarket\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eparts and continually update our inventory to meet growing demand.\u003c\/p\u003e\n\u003cp\u003eLooking for a specific part? Don’t hesitate to ask! We may have it in stock even if it’s not listed online. If not, we’ll do our best to source it for you.\u003c\/p\u003e\n\u003cp\u003eWe’re also happy to provide guidance on installation and offer excellent after-sales support to ensure your satisfaction.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eShipping Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWe ship worldwide, carefully inspecting and securely packing all parts to ensure safe delivery. Your order will be insured and shipped quickly, with the best available shipping option chosen for speed and reliability.\u003c\/p\u003e\n\u003cp\u003ePlease note:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAll parts are shipped from Cyprus (Europe).\u003c\/li\u003e\n\u003cli\u003eCustomers outside the EU may incur additional import taxes based on the value of the item.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-family: Arial; font-size: large;\"\u003e\u003cimg alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":54057414787396,"sku":"EB-295288186332","price":161.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0899\/5009\/3636\/files\/57_12cc5178-c6bd-4394-9937-4ba520a87831.jpg?v=1736577115","url":"https:\/\/www.dm-motorcycles.com\/products\/yamaha-genuine-chappy-lb50-crankcase-2-439-15121-04","provider":"www.dm-motorcycles.com","version":"1.0","type":"link"}