{"product_id":"cometic-top-end-gasket-kit-99-00mm-bore-for-yamaha-wr-450-f-yz","title":"Cometic Top End Gasket Kit 99.00mm Bore for Yamaha WR 450 F YZ","description":"\u003cp\u003eUpgrade your motorcycle's engine performance and reliability with the \u003cstrong\u003eCometic Top End Gasket Kit 99.00mm\u003c\/strong\u003e. Engineered for demanding 4-stroke applications, this comprehensive kit provides everything needed for a complete top end rebuild, ensuring a superior seal and enhanced power output for your Yamaha.\u003c\/p\u003e\n\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eEnsure peak engine performance and sealing integrity with this high-performance Cometic Top End Gasket Kit, specifically designed for 99.00mm bore engines like the Yamaha WR 450 F and YZ 450 F (2006-2015). This kit features advanced Multi-Layer Steel (MLS) head gaskets, crucial for today’s highest-output 4-stroke naturally aspirated and boosted machines. The MLS design promotes an even torque load across the gasket sealing surface, which significantly reduces bore distortion and leads to a better piston ring seal, ultimately generating more power. Each 4-stroke head gasket is constructed with embossed outer layers coated in a durable Viton rubber, designed to withstand the extreme demands of high-horsepower, high-cylinder-pressure environments. Utilizing Cometic's Extreme Sealing Technology (EST), the kit includes embossed stainless steel head, base, and rocker gaskets covered with a proprietary rubber material. This innovative gasket material effectively draws heat away from the combustion ring, dissipating it evenly across the gasket surface to prevent hot spots and premature gasket failure, ensuring long-lasting reliability. Proudly Made in the USA, this motorcycle top end rebuild kit offers unmatched quality.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures \u0026amp; Highlights\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eComplete Top End Rebuild Solution:\u003c\/strong\u003e This Cometic Top End Gasket Kit includes the correct base, head gasket, and cylinder O-rings, along with other essential top end specific O-rings and seals required for the removal and reinstallation (R\u0026amp;R) of your engine's top end.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAdvanced Multi-Layer Steel (MLS) Head Gaskets:\u003c\/strong\u003e Engineered to deliver an even torque load across the gasket sealing surface, these MLS gaskets minimize bore distortion and optimize piston ring seal, directly translating to increased power and efficiency for your high-performance 4-stroke engine.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eExtreme Sealing Technology (EST) for Demanding Engines:\u003c\/strong\u003e Designed for today’s highest-output naturally aspirated and boosted 4-stroke machines, these gaskets utilize a multi-layered steel construction with embossed, Viton rubber-coated outer layers, specifically formulated to meet the rigorous demands of high-horsepower and high-cylinder-pressure applications.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSuperior Heat Dissipation:\u003c\/strong\u003e The proprietary gasket material efficiently draws heat away from the combustion ring, distributing it evenly across the gasket surface. This critical feature eliminates hot spots, prevents gasket failure, and extends engine life.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrecision Engineered for 99.00mm Bore:\u003c\/strong\u003e Tailored to fit engines with a 99.00mm bore size, ensuring a perfect fit and optimal sealing for your specific Yamaha model.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProudly Made in the USA:\u003c\/strong\u003e Manufactured with precision and high-quality materials in the United States, guaranteeing exceptional durability and reliability for your motorcycle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Top End Gasket Kit\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Hi-Performance\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUnits:\u003c\/strong\u003e Kit\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e MLS (Multi-layer Steel)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBore Size:\u003c\/strong\u003e 99.00mm (3.897\")\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 0.58mm (0.023\")\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e 4-Stroke\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Gasket Kit\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVendor Part Number:\u003c\/strong\u003e C3279-EST\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEAN:\u003c\/strong\u003e 0191070097066\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cometic","offers":[{"title":"Default Title","offer_id":63699986284874,"sku":"09347829","price":579.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/fc1f48ff67ee55a56562eaf0109a9fa5.webp?v=1790464429","url":"https:\/\/partsdenmark.dk\/products\/cometic-top-end-gasket-kit-99-00mm-bore-for-yamaha-wr-450-f-yz","provider":"Parts Denmark","version":"1.0","type":"link"}