{"product_id":"universal-parts-47mm-qmb139-cylinder-kit-151-255","title":"Universal Parts 47mm QMB139 Cylinder Kit","description":"\u003cp\u003eThis Universal Parts 50cc QMB139 4-stroke 47mm, Performance Cylinder Kit upgrades your bike to 72cc!\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e You may need to modify your engine case to accommodate the larger cylinder.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIncludes cylinder, piston, rings, piston pin, circlips, head gasket, and base gasket\u003c\/li\u003e\n\u003cli\u003eUpgrades to 72cc\u003c\/li\u003e\n\u003cli\u003eCylinder Bore: 47mm\u003c\/li\u003e\n\u003cli\u003eCylinder Sleeve Outer Diameter: 52.7mm\u003c\/li\u003e\n\u003cli\u003eWrist Pin Diameter: 13mm\u003c\/li\u003e\n\u003cli\u003eTotal Piston Height: 34.4mm\u003c\/li\u003e\n\u003cli\u003eCompression Height (from center of wrist pin hole to top edge of piston): 17.25mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e139QMB-based 50cc \/ 80cc engines with the following engine codes:\u003c\/strong\u003e\u003c\/p\u003e\u003ctable width=\"463\" height=\"100\" style=\"width: 87.0908%;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003e139QMA\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003e139QMB\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003e1P39QMB\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003e1P39QMA-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003eYN139QMB\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003eJJ1P39QMB\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003e139FMA-2\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003eBD1P39QMB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003eBN139QMB\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003e147QMD\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003eOther QMA models\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003eOther QMB models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eDon't see your engine listed? If the engine code includes \"QM\" or \"FM\", this product is compatible with your vehicle.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003cstrong\u003eAbout Universal Parts:\u003c\/strong\u003e Universal Parts is a line of quality and affordable replacement parts for Chinese scooters! From basic items like bearings and cables all the way up to complete engine assemblies and affordable big bore kits, the comprehensive Universal Parts line can help you get your scooter riding again.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003ch3 style=\"color:#983D3C;\"\u003eThis product is not intended for use on public roads or land.\u003c\/h3\u003e","brand":"Universal Parts","offers":[{"title":"Default Title","offer_id":50254711226648,"sku":"151-255","price":60.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/files\/451359.jpg?v=1749158952","url":"https:\/\/www.scooterworks.com\/products\/universal-parts-47mm-qmb139-cylinder-kit-151-255","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}