{"product_id":"gy6-59mm-cylinder-head","title":"GY6 59mm Cylinder Head","description":"\u003ch2\u003eGY6 59mm Cylinder Head for 160-180cc Engines\u003c\/h2\u003e\u003cp\u003eThis GY6 59mm cylinder head suits four-stroke GY6 engines in the 160cc to 180cc range, so it works across a good number of engine-driven vehicles. The head has a larger combustion chamber and carefully set valve dimensions. It is one of the \u003ca href=\"\/collections\/gy6-scooter-parts\"\u003eGY6 scooter parts\u003c\/a\u003e you can fit to help improve engine efficiency and power, which can lead to a smoother ride and quicker acceleration.\u003c\/p\u003e\u003ch3\u003ePerformance Specifications\u003c\/h3\u003e\u003cp\u003eThe cylinder head uses an enlarged 59mm combustion chamber to allow better airflow and more efficient combustion. Exhaust valve diameter is 23mm and intake valve diameter is 27.75mm, which supports effective gas exchange. Exhaust port diameter is 26.5mm and intake port diameter is 27.5mm, helping the engine make the most of its potential.\u003c\/p\u003e\u003ch3\u003eInstallation Details\u003c\/h3\u003e\u003cp\u003eThe overall height is 61.75mm and the stud spacing is 76.7mm, so the head is built for a simple fit on compatible GY6 engines. If the engine is losing performance or the head shows wear or damage, replacing it is recommended to keep the engine running well.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Valve Diameter:\u003c\/strong\u003e 23mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Valve Diameter:\u003c\/strong\u003e 27.75mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Port Diameter:\u003c\/strong\u003e 26.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Port Diameter:\u003c\/strong\u003e 27.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Height:\u003c\/strong\u003e 61.75mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStud Spacing:\u003c\/strong\u003e 76.7mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e GY6 4-stroke engines and engine based vehicles, 160-180cc big bore (GY6 QMI\/QMJ 152\/157)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGY6 QMI\/QMJ 152\/157 (160-180cc big bore 4-stroke)\u003c\/li\u003e\n\u003cli\u003eVarious unlisted makes and models (GY6 4-stroke engine based vehicles, 160-180cc big bore)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Confirm the engine is a 160-180cc big bore GY6 4-stroke, and check that the bore matches a 59mm combustion chamber.\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-heads\"\u003eScooter Cylinder Heads \u0026amp; Valves\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":51135837241401,"sku":"TT-16540","price":174.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/gy6-59mm-cylinder-head-1.jpg?v=1794349860","url":"https:\/\/www.trendtimes.com\/products\/gy6-59mm-cylinder-head","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}