{"product_id":"athena-400cc-cylinder-kit-stock-bore-race","title":"Athena 400cc Cylinder Kit - Stock Bore Race","description":"\u003cp\u003eUpgrade your 4-stroke engine with the Athena 400cc Cylinder Kit. This kit delivers enhanced performance and reliability, making it ideal for enthusiasts and racers seeking a competitive edge. The stock bore design ensures compatibility while significantly boosting power output.\u003c\/p\u003e\n\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThe Athena Cylinder Kit features an aluminum cylinder with a nickel-carbide coating, providing exceptional durability and heat dissipation. Ported to Factory Works specifications, this kit optimizes airflow for improved engine performance. The included forged, OEM-style domed piston kit ensures a precise fit and efficient combustion. Experience a noticeable increase in horsepower and torque throughout the RPM range. This kit is designed for easy installation, allowing you to quickly upgrade your engine and get back on the track or trail with enhanced power and responsiveness. The Athena top-end gasket set includes all the necessary seals and hardware for a complete installation, ensuring a leak-free and reliable performance. The 12.2:1 compression ratio is optimized for racing applications.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures \u0026amp; highlights\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eEnhanced engine performance and power output.\u003c\/li\u003e\n \u003cli\u003eAluminum cylinder with durable nickel-carbide coating.\u003c\/li\u003e\n \u003cli\u003eForged, OEM-style domed piston kit for optimal combustion.\u003c\/li\u003e\n \u003cli\u003eFactory Works porting for improved airflow.\u003c\/li\u003e\n \u003cli\u003eIncludes Athena top-end gasket set with all necessary hardware.\u003c\/li\u003e\n \u003cli\u003eHard anodized power valves for increased durability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eBrand: Athena\u003c\/li\u003e\n \u003cli\u003eProduct Name: Cylinder Kit\u003c\/li\u003e\n \u003cli\u003eMPN: 09310015\u003c\/li\u003e\n \u003cli\u003eEngine Type: 4-Stroke\u003c\/li\u003e\n \u003cli\u003eDisplacement: 400 cc\u003c\/li\u003e\n \u003cli\u003eBore Size: 90.00 mm\u003c\/li\u003e\n \u003cli\u003eCompression Ratio: 12.2:1\u003c\/li\u003e\n \u003cli\u003eCylinder Bore Coating: Nickel-Carbide\u003c\/li\u003e\n \u003cli\u003eMaterial: Aluminum\u003c\/li\u003e\n \u003cli\u003eBase Color: Silver\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant to know\u003c\/h2\u003e\n\u003cp\u003eThis kit requires high performance, hard anodized power valves (cannot use OEM). Cylinder head is NOT included.\u003c\/p\u003e","brand":"Athena","offers":[{"title":"Default Title","offer_id":53638946324810,"sku":"09310015","price":571.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/199ed39cd3f1b59eccece19df35949af.webp?v=1766347092","url":"https:\/\/partsdenmark.com\/products\/athena-400cc-cylinder-kit-stock-bore-race","provider":"Parts Denmark","version":"1.0","type":"link"}