{"product_id":"vertex-top-end-piston-kit-forged-replica-vtktc22983b-honda-crf250r-crf250x-moto-house-mx","title":"Vertex Top End Piston Kit Forged Replica VTKTC22983B — Honda CRF250R 2004-2007 \/ CRF250X 2004-2017","description":"\u003ch1\u003e\u003cstrong\u003eVertex Top End Piston Kit Forged Replica VTKTC22983B — Honda CRF250R 2004-2007 \/ CRF250X 2004-2017\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Vertex Top End Piston Kit provides a complete, comprehensive solution for refreshing the upper power plant of your 250cc four-stroke racer. Sourcing individual components like gaskets, rings, and timing parts during a top-end service can lead to critical component omissions or assembly delays. This all-in-one kit consolidates your workspace by supplying all vital rebuild hardware together inside a single box.\u003c\/p\u003e\n\u003cp\u003eAt the center of this package is a high-performance replica piston precision-forged from structural 2618 aluminum alloy, matching factory OEM configuration while delivering a high strength-to-weight profile over cast alternatives. The component undergoes an advanced T-5 hardening and tempering thermal cycle to handle structural loads at high RPM levels, while the outer skirt is shielded with an advanced Molybdenum Disulphite coating to accelerate initial break-in cycles and minimize frictional heat. Paired with standard 12.9:1 compression parameters, the system ships complete with high-tensile rings, wrist pins, clips, a full top-end gasket package, and a fresh replacement timing cam chain.\u003c\/p\u003e\n\u003ch3\u003eTop Features: Vertex Top End Forged Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eForged replica design machined from rugged 2618 aluminum alloy to deliver high-strength OEM-matched dimensions.\u003c\/li\u003e\n\u003cli\u003eAdvanced T-5 hardening and thermal tempering treatment provides structural reliability under severe engine loads.\u003c\/li\u003e\n\u003cli\u003eHigh-tech Molybdenum Disulphite skirt coating minimizes friction, protects cylinder walls, and speeds up break-in time.\u003c\/li\u003e\n\u003cli\u003eAll-in-one top-end architecture contains the piston assembly, high-grade rings, pins, circlips, matching top-end gaskets, and a fresh valvetrain cam chain.\u003c\/li\u003e\n\u003cli\u003eSized accurately at 77.96 mm to provide exact factory clearance inside standard 78.00 mm cylinder bores.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlease review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.\u003c\/p\u003e\n\u003ch3\u003eFitment List\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 15px; margin-bottom: 20px; font-family: inherit;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #e2e8f0; padding: 12px; background-color: #f8fafc; text-align: left; font-weight: bold;\"\u003eYear Range\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e2e8f0; padding: 12px; background-color: #f8fafc; text-align: left; font-weight: bold;\"\u003eVehicle Brand\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e2e8f0; padding: 12px; background-color: #f8fafc; text-align: left; font-weight: bold;\"\u003eVehicle Model \u0026amp; Sub-Model\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e2004-2007\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eHonda\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eCRF250R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e2004-2009\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eHonda\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eCRF250X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e2012-2017\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eHonda\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eCRF250X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit change the factory compression ratio of my CRF250?\u003c\/strong\u003e\u003cbr\u003eA: No, this kit features standard 12.9:1 replica parameters designed to maintain your engine's original performance delivery metrics and factory fuel specifications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why does a top end piston kit include a cam chain?\u003c\/strong\u003e\u003cbr\u003eA: Cam chains stretch and wear progressively alongside your piston. Replacing the timing chain during a top-end refresh ensures your 4-stroke valvetrain maintains exact mechanical timing and eliminates the risk of chain failure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExpert Pro-Tip:\u003c\/strong\u003e When installing a fresh forged piston inside a 4-stroke Unicam engine like the CRF250, always use a dedicated piston ring filer to verify and adjust your end gap clearances prior to final wrist pin assembly. Additionally, ensure you coat the new wrist pin and small-end rod interface with clean assembly lube or high-grade engine oil to prevent dry-start scoring during your very first heat cycle.\u003c\/p\u003e\n\u003ch3\u003eRecommended Pairings:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/honda-crf250r-performance-parts-kits-and-accessories-moto-house-mx\"\u003eHonda CRF250R Performance Parts \u0026amp; Upgrades\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/honda-4-stroke-dirt-bikes-performance-parts-accessories-moto-house-mx\"\u003eHonda 4-Stroke Performance Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMoto-House MX – Choice of Champions – Clermont \/ Montverde, FL. Central Florida's premier powersports source with lightning-fast worldwide shipping.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Vertex","offers":[{"title":"Top End Rebuild A Kit - 77.950mm","offer_id":39311583084627,"sku":"VTKTC22983A","price":272.66,"currency_code":"USD","in_stock":true},{"title":"Top End Rebuild B Kit -77.960mm","offer_id":39311583117395,"sku":"VTKTC22983B","price":279.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/vertex-top-end-piston-kit-vtktc22983b-honda-crf250r-2004-2007-1291-263438.jpg?v=1738047876","url":"https:\/\/motohousemx.com\/products\/vertex-top-end-piston-kit-forged-replica-vtktc22983b-honda-crf250r-crf250x-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}