{"product_id":"47mm-piston-assembly-kit-for-gy6-80cc-139qmb-engine","title":"47mm Piston Assembly Kit for GY6 80cc 139QMB Engine","description":"\u003ch2 data-path-to-node=\"3\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-path-to-node=\"4\"\u003e\u003cspan class=\"citation-76\"\u003eUpgrade your performance with this \u003c\/span\u003e\u003cb data-path-to-node=\"4\" data-index-in-node=\"35\"\u003e\u003cspan class=\"citation-76\"\u003e47mm Piston Assembly Kit\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-76 citation-end-76\"\u003e, specifically designed for GY6 80cc (Big Bore) 139QMB 4-stroke engines.\u003csup class=\"superscript\" data-turn-source-index=\"1\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e This kit is a premium top-end solution that increases displacement and compression, providing a significant boost in power and torque for your scooter, ATV, or go-kart.\u003c\/p\u003e\n\u003ch2 data-path-to-node=\"5\"\u003eProduct Compatibility\u003c\/h2\u003e\n\u003cp data-path-to-node=\"6\"\u003eThis kit is a dedicated replacement for GY6-style 139QMB engines that have been upgraded or factory-fitted with an 80cc big bore cylinder.\u003c\/p\u003e\n\u003ctable data-path-to-node=\"7\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePopular Compatible Brands \u0026amp; Models\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=\"7,1,0,0\"\u003e\u003cb data-path-to-node=\"7,1,0,0\" data-index-in-node=\"0\"\u003eScooter \/ Moped\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"7,1,1,0\"\u003eTaoTao, Jonway, Roketa, VIP Future Champion, Ice Bear\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"7,2,0,0\"\u003e\u003cb data-path-to-node=\"7,2,0,0\" data-index-in-node=\"0\"\u003eATV \/ Go Kart\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"7,2,1,0\"\u003e80cc Chinese Quads, 4-Stroke Kids Go Karts\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"7,3,0,0\"\u003e\u003cb data-path-to-node=\"7,3,0,0\" data-index-in-node=\"0\"\u003eEngine Series\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"7,3,1,0\"\u003eGY6 139QMB, 1P39QMB (80cc\/100cc Upgrades)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"7,4,0,0\"\u003e\u003cb data-path-to-node=\"7,4,0,0\" data-index-in-node=\"0\"\u003eFitment Note\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"7,4,1,0\"\u003eFits GY6 80cc Models; \u003cb data-path-to-node=\"7,4,1,0\" data-index-in-node=\"22\"\u003eNOT a replacement for XF-147QMF\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 data-path-to-node=\"9\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable data-path-to-node=\"10\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComponent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMetric Measurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eImperial Measurement\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=\"10,1,0,0\"\u003e\u003cb data-path-to-node=\"10,1,0,0\" data-index-in-node=\"0\"\u003ePiston Diameter\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,1,1,0\"\u003e47mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,1,2,0\"\u003e\u003cspan class=\"math-inline\" data-math=\"1.85\" data-index-in-node=\"0\"\u003e$1.85\"$\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,2,0,0\"\u003e\u003cb data-path-to-node=\"10,2,0,0\" data-index-in-node=\"0\"\u003eWrist Pin Diameter\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,2,1,0\"\u003e13mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,2,2,0\"\u003e\u003cspan class=\"math-inline\" data-math=\"0.51\" data-index-in-node=\"0\"\u003e$0.51\"$\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,3,0,0\"\u003e\u003cb data-path-to-node=\"10,3,0,0\" data-index-in-node=\"0\"\u003eEngine Platform\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,3,1,0\"\u003eGY6 139QMB\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,3,2,0\"\u003e--\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,4,0,0\"\u003e\u003cb data-path-to-node=\"10,4,0,0\" data-index-in-node=\"0\"\u003eEngine Stroke\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,4,1,0\"\u003e4-Stroke\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,4,2,0\"\u003e--\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,5,0,0\"\u003e\u003cb data-path-to-node=\"10,5,0,0\" data-index-in-node=\"0\"\u003eMaterial\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,5,1,0\"\u003eHigh-Strength Performance Alloy\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,5,2,0\"\u003e--\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 data-path-to-node=\"12\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"13,0,0\"\u003e\n\u003cb data-path-to-node=\"13,0,0\" data-index-in-node=\"0\"\u003eHigh-Strength Construction:\u003c\/b\u003e Manufactured from advanced alloys for superior wear resistance and thermal stability under heavy-duty racing conditions.\u003c\/li\u003e\n\u003cli data-path-to-node=\"13,1,0\"\u003e\n\u003cb data-path-to-node=\"13,1,0\" data-index-in-node=\"0\"\u003eLow-Friction Surface:\u003c\/b\u003e Precision-machined piston skirt with a smooth finish significantly reduces friction against cylinder walls for higher RPMs.\u003c\/li\u003e\n\u003cli data-path-to-node=\"13,2,0\"\u003e\n\u003cb data-path-to-node=\"13,2,0\" data-index-in-node=\"0\"\u003eOptimal Sealing Technology:\u003c\/b\u003e Piston rings feature an elastic tension design to ensure a perfect airtight seal and maximum engine compression.\u003c\/li\u003e\n\u003cli data-path-to-node=\"13,3,0\"\u003e\n\u003cb data-path-to-node=\"13,3,0\" data-index-in-node=\"0\"\u003eExtended Engine Lifespan:\u003c\/b\u003e Engineered to maintain structural integrity in high-heat environments, effectively protecting your engine from premature wear.\u003c\/li\u003e\n\u003cli data-path-to-node=\"13,4,0\"\u003e\n\u003cb data-path-to-node=\"13,4,0\" data-index-in-node=\"0\"\u003eAll-In-One Solution:\u003c\/b\u003e Includes the 47mm piston, wrist pin, compression rings, and circlips—no additional hardware is required for installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GOOFIT","offers":[{"title":"Default Title","offer_id":54473539190952,"sku":"K082-062","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0728\/9821\/6104\/files\/Piston-Kit-47mm-For-GY6-80cc-139QMB-Engine-1.jpg?v=1770786439","url":"https:\/\/goofitmoto.com\/products\/47mm-piston-assembly-kit-for-gy6-80cc-139qmb-engine","provider":"GOOFIT Moto","version":"1.0","type":"link"}