{"product_id":"gy6-a-case-63mm-big-bore-3mm-stroker-kit","title":"GY6 A-Case 63mm Big Bore +3mm Stroker Kit","description":"\u003ch2\u003eGY6 A-Case Big Bore Stroker Kit for 150 cc Engines\u003c\/h2\u003e\u003cp\u003eThis 63mm Big Bore +3mm Stroker Kit for the GY6 A-Case is built for 150 cc engines in the QMI and QMJ families. It raises the engine's displacement to 190 cc, adding output for off-road use. Among \u003ca href=\"\/collections\/gy6-scooter-parts\"\u003eGY6 scooter parts\u003c\/a\u003e, it is a choice for riders who want more capability from their engine.\u003c\/p\u003e\u003ch3\u003eIncluded Parts\u003c\/h3\u003e\u003cp\u003eThe kit contains a 63 mm big bore cylinder, an A8 high-lift camshaft, a piston, and a +3.0 mm stroker crankshaft. Working together, these pieces are intended to deliver stronger performance and better efficiency. The high-lift cam supports greater airflow, which helps combustion and power output.\u003c\/p\u003e\u003ch3\u003eFit and Compatibility\u003c\/h3\u003e\u003cp\u003eThis kit is made for the A-case layout and uses a 54 mm cylinder stud spacing with a 65 mm cylinder skirt outer diameter. Confirm that your engine matches these dimensions before fitting. The product is for off-road use only and is not intended for public roads.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e GY6 QMI\/QMJ 152\/157, 150 cc A-case engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement:\u003c\/strong\u003e 190 cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Bore:\u003c\/strong\u003e 63 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Stud Spacing:\u003c\/strong\u003e 54 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Skirt Outer Diameter:\u003c\/strong\u003e 65 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Valve:\u003c\/strong\u003e 28 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Valve:\u003c\/strong\u003e 23 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankshaft Stroke:\u003c\/strong\u003e 60.8 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e GY6 QMI\/QMJ 152\/157 150 cc A-case engines (54 mm stud spacing) with 63 mm bore kit, 190 cc\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits:\u003c\/p\u003e\u003cul\u003e\u003cli\u003eGY6 QMI\/QMJ 152\/157 150 cc A-case engines (54 mm cylinder stud spacing)\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Make sure the engine is a GY6 QMI\/152\/157 150 cc A-case with 54 mm cylinder stud spacing and a 65 mm cylinder skirt outer diameter.\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-cylinder-kits\"\u003eScooter Big Bore \u0026amp; Cylinder Kits\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eScooter Parts\u003c\/a\u003e\u003c\/p\u003e","brand":"Trend Times Toy Stores","offers":[{"title":"Default Title","offer_id":51135706136633,"sku":"TT-16358","price":695.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/63mm-big-bore-3mm-stroker-kit-for-gy6-a-case-1.jpg?v=1794349588","url":"https:\/\/www.trendtimes.com\/products\/gy6-a-case-63mm-big-bore-3mm-stroker-kit","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}