{"product_id":"ref-56-w4738-200-wo","title":"PISTON KIT 01-04 YZF250 79.00 FORGED WOSSER 8559D200 3-RING","description":"\u003cbody\u003e\n\n\n\n\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003eWossner 79mm Bore Piston Kit (PN# 8559D200) is designed for Yamaha YZ250F and WF250F models from 2001 to 2004. This forged piston offers superior strength and heat transfer efficiency, ensuring optimal performance and durability. Its elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany, this piston meets OEM compression standards.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eHigh-strength forged piston for durability and performance\u003c\/li\u003e \t\u003cli\u003eOptimized heat transfer to cylinder walls\u003c\/li\u003e \t\u003cli\u003eElliptical design prevents piston collapse and ensures even load distribution\u003c\/li\u003e \t\u003cli\u003eManufactured in Germany\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eBore: 79mm\u003c\/li\u003e \t\u003cli\u003eActual diameter: 78.96mm\u003c\/li\u003e \t\u003cli\u003eDisplay (cm³): 249\u003c\/li\u003e \t\u003cli\u003eStroke (mm): 53.6\u003c\/li\u003e \t\u003cli\u003eClearance (mm): 0.04\u003c\/li\u003e \t\u003cli\u003eCompression Ratio: OEM\u003c\/li\u003e \t\u003cli\u003eOEM Compression Ratio: 12.50:1\u003c\/li\u003e \t\u003cli\u003eDome Volume (cm³): -4.70\u003c\/li\u003e \t\u003cli\u003eCompression Height (mm): 22.20\u003c\/li\u003e \t\u003cli\u003eIncludes 3 piston rings\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eLock: CW16\u003c\/li\u003e \t\u003cli\u003ePin: WP059\u003c\/li\u003e \t\u003cli\u003eRing Set: 790XAS-2\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eYamaha YZ250F (2001-2004)\u003c\/li\u003e \t\u003cli\u003eYamaha WF250F (2001-2004)\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003eMajority of our listings are for a direct replacement for your original part.\u003c\/p\u003e\n\u003cp\u003eOur parts are made of quality and are designed to meet or exceed the original OEM Standards.\u003c\/p\u003e\n\u003cp\u003eOur products are often a cost effective alternative to genuine OEM Parts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note: \u003c\/strong\u003ethe models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\n\u003c\/body\u003e","brand":"AW Motorcycle Parts","offers":[{"title":"Default Title","offer_id":55594819617142,"sku":"REF 56-W4738+200.WO","price":192.14,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/7032\/3318\/files\/stock54965_1.jpg?v=1746765722","url":"https:\/\/n0jgtc-nz.myshopify.com\/products\/ref-56-w4738-200-wo","provider":"AW Motorcycle Parts","version":"1.0","type":"link"}