{"product_id":"piston-kit-01-04-yzf250-77-00-8572da-wossner-2-ring-5nl-11631-10-00","title":"PISTON KIT 01-04 YZF250 77.00, 8572DA WOSSNER 2-RING, 5NL-11631-10-00","description":"\u003cp\u003eWossner forged piston kit designed for superior strength and performance. Engineered for optimal heat transfer from the combustion chamber to cylinder walls. The elliptical design ensures uniform bearing surface under heat expansion, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eForged construction for enhanced durability\u003c\/li\u003e\n\t\u003cli\u003eOptimized heat transfer for improved performance\u003c\/li\u003e\n\t\u003cli\u003eElliptical design prevents localized pressure and piston collapse\u003c\/li\u003e\n\t\u003cli\u003ePro Series design with a two-ring configuration for enhanced sealing and longevity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eBore: 76.96 mm\u003c\/li\u003e\n\t\u003cli\u003ePiston Size: 77.00 mm\u003c\/li\u003e\n\t\u003cli\u003eDisplacement: 249 cm³\u003c\/li\u003e\n\t\u003cli\u003eStroke: 53.60 mm\u003c\/li\u003e\n\t\u003cli\u003eClearance: 0.04 mm\u003c\/li\u003e\n\t\u003cli\u003eWossner Compression Ratio: 12.80:1\u003c\/li\u003e\n\t\u003cli\u003eOEM Compression Ratio: 12.50:1\u003c\/li\u003e\n\t\u003cli\u003eDome Volume: -4.80 cm³\u003c\/li\u003e\n\t\u003cli\u003eCompression Height: 20.50 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eLock: CW16\u003c\/li\u003e\n\t\u003cli\u003ePin: WP059\u003c\/li\u003e\n\t\u003cli\u003eRing Set: 770XAS\u003c\/li\u003e\n\t\u003cli\u003eRod: P4006 \/ P4005\u003c\/li\u003e\n\t\u003cli\u003eOEM Part Number: 5NL-11631-10-00\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eYamaha YZF250 (2001-2004)\u003c\/li\u003e\n\t\u003cli\u003eYamaha WR250F (2001-2004)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wossner","offers":[{"title":"Default Title","offer_id":51391504482570,"sku":"56-w022+00a.wo","price":171.27,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0898\/2757\/4026\/files\/image-1-6E27DA70-C5C9-4273-AB79-27F2CA90CB7C_56-W022_00A.WO.jpg?v=1750685656","url":"https:\/\/2bros-mx.com\/products\/piston-kit-01-04-yzf250-77-00-8572da-wossner-2-ring-5nl-11631-10-00","provider":"2bros-mx.com","version":"1.0","type":"link"}