{"product_id":"52-4mm-gy6-125cc-piston-125cc-152qmi-scooters","title":"52.4mm GY6 125cc Piston - 125cc (152QMI) Scooters","description":"\u003ch2\u003e52.4mm Piston for GY6 125cc Scooters\u003c\/h2\u003e\u003cp\u003eThis 52.4mm piston is a drop-in replacement for GY6 125cc (152QMI) scooters. It helps bring back proper compression and output when the original piston is worn or damaged, and it is well suited to top-end rebuilds. You will find it listed with \u003ca href=\"\/collections\/gy6-150cc-parts\"\u003eGY6 150cc scooter parts\u003c\/a\u003e, which makes it straightforward to swap during routine maintenance. It is made for 4-stroke engines built on Honda's GY6 layout.\u003c\/p\u003e\u003ch3\u003eConstruction and Design\u003c\/h3\u003e\u003cp\u003eThe crown is flat with a shallow dish in the center, matching the combustion chamber of the original engine. There are three ring grooves: two for compression rings and one for oil control, which together support lubrication and steady performance. Clear orientation marks are cast into the piston to show how it should be fitted.\u003c\/p\u003e\u003ch3\u003eInstallation Considerations\u003c\/h3\u003e\u003cp\u003eWhen fitting the piston, point the \"IN\" mark toward the intake side and aim the arrow toward the exhaust. Piston rings and circlips should be replaced at the same time. Before putting the engine back together, check the cylinder bore for wear or scoring so that new problems are not introduced.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston diameter:\u003c\/strong\u003e 52.4mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrist pin diameter:\u003c\/strong\u003e 15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing grooves:\u003c\/strong\u003e 3 (2 for compression, 1 for oil)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrown design:\u003c\/strong\u003e Flat top with shallow center dish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine stroke:\u003c\/strong\u003e 57.8mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement:\u003c\/strong\u003e 124.6cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine type:\u003c\/strong\u003e GY6 125cc 4-stroke (152QMI)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Piston only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e GY6 150cc (157QMJ)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits:\u003c\/p\u003e\u003cul\u003e\u003cli\u003eGY6 150cc (157QMJ)\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhere it goes:\u003c\/strong\u003e refer to part #3 on the crankshaft and piston diagram for the GY6 150cc (157QMJ).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShop more:\u003c\/strong\u003e \u003ca href=\"\/collections\/gy6-150cc-parts\"\u003eGY6 150cc Scooter Parts (157QMJ)\u003c\/a\u003e · \u003ca href=\"\/collections\/gy6-scooter-parts\"\u003eGY6 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":"Default Title","offer_id":51138801205305,"sku":"TT-26818","price":13.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/52-4mm-gy6-125cc-piston-125cc-152qmi-scooters-1.jpg?v=1794377894","url":"https:\/\/www.trendtimes.com\/products\/52-4mm-gy6-125cc-piston-125cc-152qmi-scooters","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}