{"product_id":"keeway-tx125-57mm-cylinder-piston-kit-157fmi","title":"Keeway TX125 \/ TX Supermoto 57mm Cylinder Kit – 157FMI","description":"\u003ch2\u003eKeeway TX125 \/ TX Supermoto 57mm Cylinder Kit – 157FMI\u003c\/h2\u003e\u003cp\u003eBrand-new unbranded standard 57 mm cylinder and piston kit for compatible Keeway TX125 Enduro and TX125 Supermoto motorcycles.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eStandard bore: 57 mm\u003c\/li\u003e\n\u003cli\u003eEngine family: K157FMI \/ 157FMI GS-style\u003c\/li\u003e\n\u003cli\u003eStroke reference: 48.8 mm where documented\u003c\/li\u003e\n\u003cli\u003ePiston-pin reference: 14 mm\u003c\/li\u003e\n\u003cli\u003eAir-cooled single-cylinder 4-stroke application\u003c\/li\u003e\n\u003cli\u003eEGR \/ secondary-air-system style cylinder family\u003c\/li\u003e\n\u003cli\u003eCondition: Brand new\u003c\/li\u003e\n\u003cli\u003eType: Unbranded aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 x cylinder barrel\u003c\/li\u003e\n\u003cli\u003e1 x piston\u003c\/li\u003e\n\u003cli\u003e1 x piston ring set\u003c\/li\u003e\n\u003cli\u003eHead and base gaskets\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eVehicle Compatibility\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eYears \/ Variant\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTX 125 Enduro \/ TX 125 Supermoto\u003c\/td\u003e\n\u003ctd\u003e2009–2017\u003c\/td\u003e\n\u003ctd\u003eOfficial TX manual: 157FMI-2B, 57 x 48.8 mm; OEM cylinder 139013210030\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTX 125 EFI Enduro \/ Supermoto\u003c\/td\u003e\n\u003ctd\u003e2018–2020\u003c\/td\u003e\n\u003ctd\u003e57 mm \/ 14 mm piston family; compare cylinder revision and emissions ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eImportant Fitment Information\u003c\/h3\u003e\u003cp\u003eThe Keeway TX125 manual specifies a 157FMI-2B engine with 57 x 48.8 mm bore\/stroke. Confirm 14 mm piston pin, EGR\/secondary-air fittings and the original cylinder\/gasket layout before ordering.\u003c\/p\u003e\u003cp\u003eDo not order by 125cc capacity alone. Compare bore, piston-pin diameter, piston crown, cylinder height, stud spacing, gasket profile, oil passages and EGR\/secondary-air ports with the original top end.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eCorrect piston-ring orientation, piston direction, valve timing, gasket installation and cylinder-head torque are essential. Professional installation is recommended where the correct engine-building procedure is not known.\u003c\/p\u003e","brand":"Unbranded","offers":[{"title":"Default Title","offer_id":57504411189623,"sku":"01242-ENG","price":44.0,"currency_code":"SHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0528\/8771\/6007\/files\/20260929_113018.jpg?v=1790772653","url":"https:\/\/www.motomaniauk.com\/products\/keeway-tx125-57mm-cylinder-piston-kit-157fmi","provider":"Moto Mania UK","version":"1.0","type":"link"}