{"product_id":"gy6-150cc-57-4mm-big-bore-kit-cylinder-head-piston-gasket-set-qmj157","title":"GY6 150cc 57.4mm Big Bore Kit Cylinder Head Piston Gasket Set QMJ157","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis aftermarket replacement big bore kit set is intended for GY6 150cc and QMJ157 applications and includes a cylinder head, piston, and gasket set as listed. A big bore kit set is used when servicing or rebuilding the top end of a small engine, where the cylinder, piston, and related sealing components work together to restore the combustion chamber assembly. The set is supplied for the GY6 150cc and QMJ157 engine applications with a 57.4mm bore.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBig bore kit set with a 57.4mm cylinder bore for the listed GY6 150cc and QMJ157 applications\u003c\/li\u003e\n\u003cli\u003eIncludes a cylinder head, piston, and gasket set as supplied in the listing\u003c\/li\u003e\n\u003cli\u003eThe cylinder and piston form the moving combustion assembly of the top end\u003c\/li\u003e\n\u003cli\u003eThe gasket set helps seal the mating surfaces of the top end assembly\u003c\/li\u003e\n\u003cli\u003eSupplied for servicing or rebuilding the top end of the supported engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003efor GY6 150cc applications\u003c\/li\u003e\n\u003cli\u003efor QMJ157 applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Uses\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRebuilding the top end of a supported GY6 150cc or QMJ157 engine\u003c\/li\u003e\n\u003cli\u003eReplacing a worn, damaged, or malfunctioning cylinder head, piston, or gasket set\u003c\/li\u003e\n\u003cli\u003eServicing the combustion assembly during engine repair\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Big Bore Kit Set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Size:\u003c\/strong\u003e 57.4mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Application(s):\u003c\/strong\u003e GY6 150cc, QMJ157\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Cylinder Head, Piston, Gasket Set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral Application:\u003c\/strong\u003e Engine top end assembly\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is a big bore kit set used for? \u003cstrong\u003eA:\u003c\/strong\u003e It is used when servicing or rebuilding the top end of a small engine, where the cylinder, piston, and gasket components form the combustion assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How should fitment be verified? \u003cstrong\u003eA:\u003c\/strong\u003e Compare the complete existing part number, engine model designation, and bore size against the information supplied before purchase.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eThis is an aftermarket replacement part and is not represented as genuine or original equipment. Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"DURAFORCE","offers":[{"title":"Default Title","offer_id":67611617034513,"sku":"ZZ3P01098","price":142.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/s-l1600_69173ae5-6334-47d3-99e1-c74e424efce5.jpg?v=1790974976","url":"https:\/\/www.duraforce.com\/products\/gy6-150cc-57-4mm-big-bore-kit-cylinder-head-piston-gasket-set-qmj157","provider":"DURAFORCE","version":"1.0","type":"link"}