{"product_id":"gy6-crankshaft-complete","title":"GY6 Crankshaft (Complete)","description":"\u003ch2\u003eComplete Crankshaft for GY6 125cc\/150cc Engines\u003c\/h2\u003e\u003cp\u003eThis crankshaft serves as a complete OEM replacement for GY6 125cc and 150cc scooter engines. Designed for straightforward integration, it is important for maintaining engine function and performance. This part is one of the \u003ca href=\"\/collections\/gy6-scooter-parts\"\u003eGY6 scooter parts\u003c\/a\u003e that can help restore your scooter's power and efficiency. Ideal for riders seeking a reliable solution when OEM options are unavailable or costly.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cp\u003eThis crankshaft includes main bearings and is engineered for specific engine applications. The stroke measures 57.8mm, allowing for effective performance in your scooter. The overall length is 285mm, with flywheel and drive end thread sizes both at M12x1.25. It is important to note that the piston, pin, and circlips are sold separately but can be found online.\u003c\/p\u003e\u003ch3\u003eWhen to Replace Your Crankshaft\u003c\/h3\u003e\u003cp\u003eReplacing your crankshaft may be necessary when you experience engine performance issues or unusual vibrations. Signs of wear or damage to the crankshaft can lead to decreased power output and efficiency. If you're rebuilding your engine or replacing other internal components, consider renewing the crankshaft for improved performance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke:\u003c\/strong\u003e 57.8mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 285mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlywheel Thread Size:\u003c\/strong\u003e M12x1.25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlywheel Thread Length:\u003c\/strong\u003e 14mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive End Thread Size:\u003c\/strong\u003e M12x1.25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive End Thread Length:\u003c\/strong\u003e 14mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Diameter (Piston Pin Hole):\u003c\/strong\u003e 15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Splines:\u003c\/strong\u003e 19\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain Bearings:\u003c\/strong\u003e Included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThis crankshaft is compatible with 157QMJ-based 125cc, 150cc, and 169cc engines, including the following engine codes:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e157QMJ\u003c\/li\u003e\n\u003cli\u003e161QMK\u003c\/li\u003e\n\u003cli\u003e152QMI\u003c\/li\u003e\n\u003cli\u003e1P61QMK\u003c\/li\u003e\n\u003cli\u003eYN1P57QMJ\u003c\/li\u003e\n\u003cli\u003e1P52FMI\u003c\/li\u003e\n\u003cli\u003e154FMI\u003c\/li\u003e\n\u003cli\u003eJJ157QMJ\u003c\/li\u003e\n\u003cli\u003e1P57QMJ\u003c\/li\u003e\n\u003cli\u003eBN157QMJ\u003c\/li\u003e\n\u003cli\u003eBN161QMK-A\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShop more:\u003c\/strong\u003e \u003ca href=\"\/collections\/gy6-scooter-parts\"\u003eGY6 Scooter Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/chinese-scooter-parts\"\u003eChinese 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":"Magic Cars","offers":[{"title":"Default Title","offer_id":52800367886567,"sku":"25-914932","price":57.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2245\/9711\/files\/crankshaft-complete-for-gy6-1.jpg?v=1791665795","url":"https:\/\/www.magiccars.com\/products\/gy6-crankshaft-complete","provider":"MagicCars","version":"1.0","type":"link"}