{"product_id":"piston-125-cc-gy6","title":"Blue Line 52.4mm GY6 125cc Piston - 152QMI Scooters","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003eBlue Line GY6 125cc Piston\u003c\/strong\u003e is a standard-bore replacement piston for Chinese GY6 125cc (152QMI) 4-stroke scooters, the platform based on Honda's original GY6 design. It restores compression and power when your old piston is scored, cracked, or worn from high mileage, and it's a key part of any GY6 125 top-end rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePiston rings, wrist pin, and circlips are sold separately.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eProduct is intended as OEM equivalent for listed models. Any misuse, alteration or alternative application is prohibited by law.\u003c\/p\u003e\u003cp\u003eThis product is intended for off-road use only. This product is not intended for use on public roads or land.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 52.4mm bore:\u003c\/strong\u003e Direct replacement for the stock GY6 125cc piston.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat top with center dish:\u003c\/strong\u003e Matches the stock combustion chamber shape.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree ring grooves:\u003c\/strong\u003e Two compression rings and one oil control ring, with oil drain holes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrientation marks:\u003c\/strong\u003e \"IN\" and arrow markings on the crown for correct installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15mm pin bore:\u003c\/strong\u003e Fits the stock GY6 wrist pin and connecting rod.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 1100-1192\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston diameter (bore):\u003c\/strong\u003e 52.4mm (standard size)\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 compression, 1 oil)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrown:\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:\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\u003eBrand:\u003c\/strong\u003e Blue Line\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eModels\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016-2019\u003c\/td\u003e\n\u003ctd\u003eBoom International Holdings (USA)\u003c\/td\u003e\n\u003ctd\u003eBD125-1, BD125-2, BD125-7, BD125-8, BD125-9, BD125-10, BD125-11, BD125-15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2009\u003c\/td\u003e\n\u003ctd\u003eCobra Scooters\u003c\/td\u003e\n\u003ctd\u003eX Road\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2007-2009\u003c\/td\u003e\n\u003ctd\u003eFYM-USA Group\u003c\/td\u003e\n\u003ctd\u003eFY125T-12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2006\u003c\/td\u003e\n\u003ctd\u003eHi-Bird Motorcycle USA\u003c\/td\u003e\n\u003ctd\u003eQH-125-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2011-2016\u003c\/td\u003e\n\u003ctd\u003eJiangsu SACIN USA\u003c\/td\u003e\n\u003ctd\u003eST125-1, ST125-6, ST125-6B, ST125-8, ST125-8A, ST125-11, ST125-15, ST125-18, ST125-19, ST125-A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2007-2008\u003c\/td\u003e\n\u003ctd\u003eZongshen\u003c\/td\u003e\n\u003ctd\u003eZS125T-30, ZS125T-32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther makes\u003c\/td\u003e\n\u003ctd\u003eGY6 125cc\u003c\/td\u003e\n\u003ctd\u003eScooters with 152QMI \/ 1P52QMI engines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eCheck the engine code stamped on your engine case before ordering. Engines marked 152QMI may use this piston, but measure your cylinder bore to confirm it's the standard 52.4mm. This piston does not fit GY6 150cc (157QMJ) engines, which use a 57.4mm bore.\u003c\/p\u003e\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\u003cp\u003eInstall with the \"IN\" mark toward the intake side and the arrow pointing toward the exhaust. Always fit new rings and circlips, and check the cylinder for scoring or wear before reassembly.\u003c\/p\u003e\u003ch2\u003eProduct Diagrams\u003c\/h2\u003e\u003cul class=\"az-content-resources\"\u003e\u003cli\u003e\n\u003ca href=\"\/search?view=az-assembly\u0026amp;q=243\"\u003eGY6 CRANKSHAFT AND PISTON\u003c\/a\u003e \u003cspan\u003eCallout 3\u003c\/span\u003e\n\u003c\/li\u003e\u003c\/ul\u003e","brand":"Blue Line","offers":[{"title":"Default Title","offer_id":67964599107905,"sku":"1100-1192","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/1100-1192_015a13f8-32c8-4e41-b12c-098231f78bb0.jpg?v=1792793654","url":"https:\/\/azscooterparts.com\/products\/piston-125-cc-gy6","provider":"AZScooterParts","version":"1.0","type":"link"}