{"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\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\n\u003c\/body\u003e","brand":"Wossner","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=1783556187","url":"https:\/\/www.awmotorcycleparts.co.uk\/products\/ref-56-w4738-200-wo","provider":"AW Motorcycle Parts","version":"1.0","type":"link"}