{"product_id":"pioneer-xf125gy-2b-2007-2014-150cc-big-bore-62mm-piston-kit-01350-eng","title":"Pioneer XF125GY-2B 2007-2014 150cc Big Bore 62mm Piston Kit","description":"\u003ch2\u003ePioneer XF125GY-2B 2007-2014 150cc Big Bore 62mm Piston Kit\u003c\/h2\u003e\n\n\u003cp\u003eBrand new aftermarket piston service kit for \u003cstrong\u003ePioneer Adrenaline \/ XF125GY-2B Supermoto 2007-2014\u003c\/strong\u003e engines that have already been converted to the compatible \u003cstrong\u003e150cc K157FMI \/ K157-series 62 mm big-bore cylinder\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eDirect Fitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePioneer Adrenaline \/ XF125GY-2B Supermoto - 2007-2014\u003c\/li\u003e\n\u003cli\u003eK157FMI models\u003c\/li\u003e\n\u003cli\u003eRequired cylinder bore: 62 mm\u003c\/li\u003e\n\u003cli\u003eApplication: existing 150cc big-bore conversion only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 62 mm piston\u003c\/li\u003e\n\u003cli\u003e1 x piston ring set\u003c\/li\u003e\n\u003cli\u003e1 x gudgeon \/ piston pin\u003c\/li\u003e\n\u003cli\u003e1 x gasket as supplied with the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eReplacement Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBig-bore piston family: K157FMI \/ K157 Series\u003c\/li\u003e\n\u003cli\u003eComparable aftermarket reference: EP010014EN150\u003c\/li\u003e\n\u003cli\u003ePiston type: 62 mm flat-top big-bore service piston\u003c\/li\u003e\n\u003cli\u003eSKU: 01350-ENG\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDirect Replacement - No Machining Intended\u003c\/h3\u003e\n\u003cp\u003eThis listing is for a motorcycle already fitted with the matching 62 mm 150cc big-bore cylinder. When the existing conversion uses the compatible K157FMI 62 mm flat-top piston specification, this kit is intended as a direct service replacement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis is not a conversion kit and no cylinder barrel is included.\u003c\/strong\u003e It will not directly fit a standard 125cc engine retaining the original approximately 57 mm bore.\u003c\/p\u003e\n\n\u003ch3\u003eImportant Fitment Check\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, remove or measure the existing piston and confirm a \u003cstrong\u003e62 mm bore\u003c\/strong\u003e, matching piston crown profile, gudgeon-pin diameter, compression height, ring-groove layout and gasket profile. Aftermarket 150cc conversions can differ even when fitted to the same motorcycle model.\u003c\/p\u003e\n\n\u003cp\u003eDo not order by motorcycle model alone. The bike must already have the compatible K157FMI \/ K157-series 150cc big-bore setup.\u003c\/p\u003e\n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReplacing a worn piston in an existing 150cc conversion\u003c\/li\u003e\n\u003cli\u003eReplacing worn piston rings\u003c\/li\u003e\n\u003cli\u003eRepairing a compatible K157FMI big-bore top end\u003c\/li\u003e\n\u003cli\u003eTop-end rebuilds where the existing piston measures 62 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCondition\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBrand New\u003c\/strong\u003e aftermarket replacement components. Not represented as genuine Pioneer parts.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eCorrect piston-to-cylinder clearance, ring orientation, circlip installation, valve timing and fuelling are essential. Installation by a competent motorcycle mechanic is recommended.\u003c\/p\u003e","brand":"Moto Mania UK","offers":[{"title":"Default Title","offer_id":57504403292535,"sku":"01350-ENG","price":31.0,"currency_code":"SHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0528\/8771\/6007\/files\/20260929_140213.jpg?v=1790772890","url":"https:\/\/www.motomaniauk.com\/products\/pioneer-xf125gy-2b-2007-2014-150cc-big-bore-62mm-piston-kit-01350-eng","provider":"Moto Mania UK","version":"1.0","type":"link"}