{"product_id":"4-stroke-big-bore-top-end-gasket-kit","title":"4-Stroke Big Bore Top End Gasket Kit","description":"\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eAthena 4-Stroke Big Bore Top End Gasket Kit\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eUpgrade performance and reliability\u003c\/strong\u003e with the Athena 4-Stroke Big Bore Top End Gasket Kit — a complete sealing solution engineered for big-bore cylinder upgrades, high-compression engines, and demanding riding conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e includes all head, base, valve cover and necessary seals for a full top-end rebuild.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-quality materials:\u003c\/strong\u003e multi-layer steel, advanced elastomers and precision-cut components resist heat, oil and combustion pressure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerfect fit:\u003c\/strong\u003e CNC-matched profiles ensure proper compression sealing and consistent performance after big-bore or porting work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable \u0026amp; reliable:\u003c\/strong\u003e engineered to withstand boosted temperatures and higher cylinder pressures common with big-bore upgrades.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy installation:\u003c\/strong\u003e OEM-compatible form factor and clear sealing surfaces reduce installation time and rework.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you’re rebuilding for track, trail or street, trust Athena’s reputation for racing-grade gaskets to deliver leak-free sealing and consistent compression. Ideal for tuners and enthusiasts seeking long-lasting top-end integrity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e compatible with a range of 4-stroke big-bore applications — check part number compatibility before ordering.\u003c\/p\u003e","brand":"Athena","offers":[{"title":"Top End Engine Gasket Kit \/ P400510160002","offer_id":52239927476542,"sku":"68-4465-51s","price":113.55,"currency_code":"USD","in_stock":false},{"title":"Top End Engine Gasket Kit \/ P400510160008","offer_id":52239927509310,"sku":"68-4472-51s","price":77.17,"currency_code":"USD","in_stock":false},{"title":"Cylinder \u0026 Cylinder Kits \/ P400485160021","offer_id":52239927542078,"sku":"68-4949-51s","price":43.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/0373\/5614\/files\/7c72-5b89ac63bf383.jpg?v=1758327588","url":"https:\/\/thed-zone.myshopify.com\/products\/4-stroke-big-bore-top-end-gasket-kit","provider":"thed.zone","version":"1.0","type":"link"}