{"product_id":"namura-020-over-bore-piston-kit-for-honda-z50r-crf50f-xr50r-39-5mm-nx-10051-2","title":"Namura .020 Over Bore Piston Kit for Honda Z50R CRF50F \u0026 XR50R 39.5mm NX-10051-2","description":"\u003ch2\u003eNamura .020 Over Bore Piston Kit for Honda\u003c\/h2\u003e\u003cp\u003eThis Namura .020 Over Bore Piston Kit with 39.5mm bore replaces OEM part NX-10051-2 for Honda Z50R, CRF50F, and XR50R engines, providing a reliable top-end rebuild.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Namura .020 Over Bore Piston Kit is a direct replacement for Honda Z50R, CRF50F, and XR50R minibikes. With a 39.5mm bore and OEM cross-reference NX-10051-2, this kit includes piston, rings, and pin for a complete rebuild. Namura Piston Kit ensures reliable compression and performance for your small Honda engine.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIncludes piston, rings, and wrist pin for complete installation\u003c\/li\u003e\n\u003cli\u003e.020 oversize restores cylinder clearance on worn bores\u003c\/li\u003e\n\u003cli\u003eHigh-silicon aluminum alloy for durability and heat resistance\u003c\/li\u003e\n\u003cli\u003ePrecision-machined to fit 39.5mm bore\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OEM part NX-10051-2\u003c\/li\u003e\n\u003cli\u003eIdeal for rebuilding Z50R, CRF50F, XR50R\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Honda Z50R\u003c\/li\u003e\n\u003cli\u003efor Honda CRF50F\u003c\/li\u003e\n\u003cli\u003efor Honda XR50R\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding minibike engines for enhanced performance\u003c\/li\u003e\n\u003cli\u003eRestoring vintage Honda Z50R, CRF50F, XR50R\u003c\/li\u003e\n\u003cli\u003eIncreasing displacement for more power\u003c\/li\u003e\n\u003cli\u003eReplacing worn pistons after high mileage\u003c\/li\u003e\n\u003cli\u003eOff-road and pit bike engine maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNX-10051-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e39.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHonda Z50R, CRF50F, XR50R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this kit work with other Honda 50cc engines? \u003cstrong\u003eA:\u003c\/strong\u003e It is designed specifically for Z50R, CRF50F, and XR50R models with 39.5mm bore.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does it include everything needed for installation? \u003cstrong\u003eA:\u003c\/strong\u003e The kit includes piston, rings, and wrist pin; you will need a new gasket set separately.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44888364449878,"sku":"SZ1F08257","price":72.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_4da223a1-e8a8-43ee-a534-0d21645ee539.jpg?v=1781091488","url":"https:\/\/www.solidspare.com\/products\/namura-020-over-bore-piston-kit-for-honda-z50r-crf50f-xr50r-39-5mm-nx-10051-2","provider":"Solid Spare","version":"1.0","type":"link"}