{"product_id":"namura-standard-bore-size-b-top-end-kit-for-honda-many-crf250r-crf250x-78mm","title":"Namura Standard Bore Size B Top End Kit for Honda many CRF250R \u0026 CRF250X 78mm","description":"\u003ch2\u003eNamura Standard Bore Size B Top End Kit for Honda\u003c\/h2\u003e\u003cp\u003eThis Namura Standard Bore Size B top end kit includes a piston, rings, wrist pin, and circlips designed to rebuild the top end of Honda CRF250R and CRF250X engines with a 78mm bore.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura Standard Bore Size B top end kit is a direct replacement piston assembly for Honda CRF250R and CRF250X motorcycles. It provides the essential components needed to restore compression and performance after top end wear. This kit is intended for riders and mechanics rebuilding their high-performance dirt bike engine.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFeatures a forged aluminum piston for strength and heat dissipation\u003c\/li\u003e\n\u003cli\u003eIncludes high-quality chrome-plated piston rings for reduced friction\u003c\/li\u003e\n\u003cli\u003ePrecision-machined wrist pin and circlips ensure secure installation\u003c\/li\u003e\n\u003cli\u003eDesigned to match OEM specifications for reliable fit and function\u003c\/li\u003e\n\u003cli\u003e78mm standard bore size maintains factory bore dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Honda CRF250R\u003c\/li\u003e\n\u003cli\u003efor Honda CRF250X\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMotocross racing and track days\u003c\/li\u003e\n\u003cli\u003eTrail riding and off-road adventures\u003c\/li\u003e\n\u003cli\u003eEnduro and cross-country competition\u003c\/li\u003e\n\u003cli\u003eEngine rebuilds and performance restoration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e78mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard Bore Top End Kit\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 Does this kit fit both CRF250R and CRF250X? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, this Namura top end kit is designed to fit both Honda CRF250R and CRF250X models with the 78mm bore, but always verify compatibility with your specific year and serial number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is included in the kit? \u003cstrong\u003eA:\u003c\/strong\u003e The kit includes a piston, piston rings, wrist pin, and circlips; you may need to reuse or replace additional gaskets and seals 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":44949834137686,"sku":"SZ1F15503","price":296.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_15b2f6e6-8437-4820-bfc2-1269f98ad29a.jpg?v=1781399850","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-size-b-top-end-kit-for-honda-many-crf250r-crf250x-78mm","provider":"Solid Spare","version":"1.0","type":"link"}