{"product_id":"gy6-50cc-139qmb-47mm-piston-kit","title":"GY6 50cc (139QMB) 47mm Piston Kit","description":"\u003ch2\u003e47mm Piston Kit for GY6 50cc Models\u003c\/h2\u003e\u003cp\u003eThis replacement piston kit is designed for the QMB139 4-stroke engine with a 47mm bore. It includes all necessary components: a piston, rings, a piston pin, and circlips. It is one of the key \u003ca href=\"\/collections\/gy6-50cc-parts\"\u003eGY6 50cc scooter parts\u003c\/a\u003e that ensure proper sealing of the combustion chamber, preventing issues like oil consumption and low compression. Proper matching of the piston diameter and pin size to your cylinder is important for effective performance.\u003c\/p\u003e\u003ch3\u003eWhen to Replace It\u003c\/h3\u003e\u003cp\u003eReplace the piston kit when you notice symptoms like excessive smoke or increased oil consumption, which may indicate worn rings. Maintaining proper compression is important for engine efficiency, making timely replacement necessary for reliable performance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston Diameter:\u003c\/strong\u003e 47mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrist Pin Diameter:\u003c\/strong\u003e 13mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Piston Height:\u003c\/strong\u003e 34.1mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThis piston kit is compatible with QMB139 50cc and 49cc engines.\u003c\/p\u003e\u003cul\u003e\u003cli\u003eVarious makes\/models\u003c\/li\u003e\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\/gy6-50cc-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-pistons-rings\"\u003eScooter Pistons \u0026amp; Piston Rings\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":52795180777703,"sku":"25-902869","price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2245\/9711\/files\/47mm-piston-kit-for-gy6-50cc-139qmb-1.webp?v=1791584231","url":"https:\/\/www.magiccars.com\/products\/gy6-50cc-139qmb-47mm-piston-kit","provider":"MagicCars","version":"1.0","type":"link"}