{"product_id":"gy6-piston-set","title":"GY6 Piston Set","description":"\u003ch2\u003eGY6 Piston Kit for 125cc and 150cc Motors\u003c\/h2\u003e\u003cp\u003eThis GY6 piston kit, which includes the piston and rings, is built for 125cc and 150cc GY6 4-stroke motors. It comes in 58.5mm, 61mm, and 63mm bore sizes and is a practical choice for anyone moving up to a Big Bore cylinder kit. It is one of several \u003ca href=\"\/collections\/gy6-scooter-parts\"\u003eGY6 scooter parts\u003c\/a\u003e that can help boost engine output. Keep in mind that the 61mm piston will not work with 161QMK engines.\u003c\/p\u003e\u003ch3\u003ePiston Details\u003c\/h3\u003e\u003cp\u003eThe kit uses a 15mm piston pin and has a 20mm compression height. Together these dimensions help the piston seat correctly and compress the fuel mixture as intended. When picking a size, go with the one that suits your engine setup so the upgrade goes smoothly.\u003c\/p\u003e\u003ch3\u003eWhen to Replace and Use\u003c\/h3\u003e\u003cp\u003eThe piston plays a major role in how efficiently your GY6 engine runs, so it is worth paying attention to its condition during a rebuild. Common warning signs include strange noises from the engine, a drop in power, and oil use that seems higher than normal. Routine inspections can help you keep the engine running well for longer.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 58.5mm, 61mm, 63mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston Pin Diameter:\u003c\/strong\u003e 15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression Height:\u003c\/strong\u003e 20mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e GY6 4-stroke 125cc and 150cc Big Bore cylinder kits, 58.5mm, 61mm and 63mm sizes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eFits:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGY6 QMI\/QMJ 152\/157 engines (150cc, 4-stroke)\u003c\/li\u003e\n\u003cli\u003eGY6 125cc and 150cc 4-stroke engines with Big Bore cylinder kits (various unlisted makes\/models)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Select the piston size that matches your Big Bore cylinder bore: 58.5mm, 61mm or 63mm. The 61mm piston is not designed for 161QMK engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBrowse related parts:\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-pistons-rings\"\u003eScooter Pistons \u0026amp; Piston Rings\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eScooter Parts\u003c\/a\u003e\u003c\/p\u003e","brand":"Trend Times Toy Stores","offers":[{"title":"63","offer_id":51134450925625,"sku":"TT-15784","price":46.98,"currency_code":"USD","in_stock":true},{"title":"61","offer_id":51134450958393,"sku":"TT-15785","price":46.98,"currency_code":"USD","in_stock":true},{"title":"58.5","offer_id":51134450991161,"sku":"TT-15786","price":46.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/gy6-piston-set-1.jpg?v=1794344095","url":"https:\/\/www.trendtimes.com\/products\/gy6-piston-set","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}