{"product_id":"piston-kit-yfm-yfb250-72-50-wossner-forged-8659d150","title":"PISTON KIT YFM YFB250 72.50, WOSSNER FORGED 8659D150","description":"The Wossner 72.50mm Bore Piston Kit (Part No. 8659D150) is a high-performance forged piston designed for Yamaha YFM250 Timberwolf, YFB250 Bear Tracker, Bruin, and Big Bear models. Engineered for strength and durability, it optimizes heat transfer within the combustion chamber and features an elliptical design to ensure even load distribution, reducing localized pressure and preventing piston collapse. Manufactured in Germany, this piston maintains the OEM compression ratio for reliable engine performance.\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eHigh-strength forged piston construction\u003c\/li\u003e\n\t\u003cli\u003eOptimized heat transfer for improved combustion efficiency\u003c\/li\u003e\n\t\u003cli\u003eElliptical design for even thrust load distribution\u003c\/li\u003e\n\t\u003cli\u003eManufactured in Germany\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 Size: 72.50mm\u003c\/li\u003e\n\t\u003cli\u003eActual Bore Diameter: 72.44mm\u003c\/li\u003e\n\t\u003cli\u003eCompression Ratio: OEM\u003c\/li\u003e\n\t\u003cli\u003eOEM Compression Ratio: 9.50:1\u003c\/li\u003e\n\t\u003cli\u003eDisplacement: 229cc\u003c\/li\u003e\n\t\u003cli\u003eStroke: 58.00mm\u003c\/li\u003e\n\t\u003cli\u003eClearance: 0.06mm\u003c\/li\u003e\n\t\u003cli\u003eDome Volume: -4.70cm³\u003c\/li\u003e\n\t\u003cli\u003eCompression Height: 23.80mm\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 P\/N: CW16\u003c\/li\u003e\n\t\u003cli\u003ePin P\/N: WP041\u003c\/li\u003e\n\t\u003cli\u003eRing Set P\/N: 725XDS\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 YFM250 Timberwolf (1990-2000)\u003c\/li\u003e\n\t\u003cli\u003eYamaha YFB250 Bear Tracker (2000-2004)\u003c\/li\u003e\n\t\u003cli\u003eYamaha Bruin (2005-2006)\u003c\/li\u003e\n\t\u003cli\u003eYamaha Big Bear (2007-2009)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e","brand":"Wossner","offers":[{"title":"Default Title","offer_id":50691135734026,"sku":"56-W4675+150.WO","price":184.05,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0846\/0094\/6954\/files\/stock54837_1.jpg?v=1738253120","url":"https:\/\/store.phoenixmotos.com\/products\/piston-kit-yfm-yfb250-72-50-wossner-forged-8659d150","provider":"Phoenix Motos","version":"1.0","type":"link"}