{"product_id":"gy6-50cc-139qmb-engines-heavy-duty-crankshaft-16-tooth","title":"GY6 50cc (139QMB) Engines Heavy Duty Crankshaft 16 Tooth","description":"\u003ch2\u003eHeavy-Duty Crankshaft for GY6 50cc Engines\u003c\/h2\u003e\u003cp\u003eThis heavy-duty crankshaft is made for GY6 50cc engines, specifically the QMB139 and 139QMB models. It is built to OEM specifications so it fits reliably and performs as intended. Among \u003ca href=\"\/collections\/gy6-50cc-parts\"\u003eGY6 50cc scooter parts\u003c\/a\u003e, it stands out with a 16-tooth oil pump drive gear and pre-pressed heavy-duty bearings for a longer service life. The crankshaft comes pre-assembled, so it is ready to install straight out of the box.\u003c\/p\u003e\u003ch3\u003eBuild Quality and Features\u003c\/h3\u003e\u003cp\u003eThis crankshaft is manufactured to Japanese and Taiwanese standards and offers OEM-level durability. The pre-pressed bearings help it last longer, which makes it a good fit for off-road and racing use. The 16-tooth oil pump drive gear matches the engine's oil system.\u003c\/p\u003e\u003ch3\u003eFitting and Compatibility\u003c\/h3\u003e\u003cp\u003eThis crankshaft directly replaces standard and Big Bore builds and fits without any modifications. Before you install it, confirm that your engine uses a 16-tooth oil pump drive gear. It suits anyone maintaining or replacing GY6 50cc scooter parts.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e NK100.81\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e QMB139 \/ 139QMB 49cc \/ 50cc 4-stroke horizontal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Pump Drive Gear:\u003c\/strong\u003e 16 tooth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Pre-pressed heavy-duty bearings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (packaged):\u003c\/strong\u003e 11\" L x 5\" W x 4\" H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e GY6 50cc 4-stroke QMB139 \/ 139QMB engines with a 16-tooth oil pump drive gear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGY6 50cc 4-stroke QMB139 \/ 139QMB engine (16-tooth oil pump drive gear)\u003c\/li\u003e\n\u003cli\u003eStandard and Big Bore builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Before ordering, check that your engine has a 16-tooth oil pump drive gear. It fits QMB139 \/ 139QMB 49cc or 50cc 4-stroke horizontal engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShop more:\u003c\/strong\u003e \u003ca href=\"\/collections\/gy6-50cc-parts\"\u003eGY6 50cc Scooter Parts (139QMB)\u003c\/a\u003e · \u003ca href=\"\/collections\/gy6-scooter-parts\"\u003eGY6 Scooter Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-engines\"\u003eScooter Engines \u0026amp; Engine Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eScooter Parts\u003c\/a\u003e\u003c\/p\u003e","brand":"Trend Times Toy Stores","offers":[{"title":"Default Title","offer_id":51135799558201,"sku":"TT-16484","price":196.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/heavy-duty-crankshaft-16-tooth-for-gy6-50cc-139qmb-engines-1.jpg?v=1794349778","url":"https:\/\/www.trendtimes.com\/products\/gy6-50cc-139qmb-engines-heavy-duty-crankshaft-16-tooth","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}