{"product_id":"oro2u-56-w4675-150-wo-800c56e5","title":"Piston Kit Yfm YFB250 72.50, Wossner Forged 8659D150","description":"\u003cp\u003ePiston Kit Yfm YFB250 72.50, Wossner Forged 8659D150. Find the product specifications and compatibility information below.\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eProduct: Piston Kit Yfm YFB250 72.50, Wossner Forged 8659D150\u003c\/li\u003e\n\u003cli\u003ePart number: 56-W4675+150.WO\u003c\/li\u003e\n\u003cli\u003eBrand: Wossner\u003c\/li\u003e\n\u003cli\u003eThe 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.\u003c\/li\u003e\n\u003cli\u003eHigh-strength forged piston construction\u003c\/li\u003e\n\u003cli\u003eOptimized heat transfer for improved combustion efficiency\u003c\/li\u003e\n\u003cli\u003eElliptical design for even thrust load distribution\u003c\/li\u003e\n\u003cli\u003eManufactured in Germany\u003c\/li\u003e\n\u003cli\u003eBore Size: 72.50mm\u003c\/li\u003e\n\u003cli\u003eActual Bore Diameter: 72.44mm\u003c\/li\u003e\n\u003cli\u003eCompression Ratio: OEM\u003c\/li\u003e\n\u003cli\u003eOEM Compression Ratio: 9.50:1\u003c\/li\u003e\n\u003cli\u003eDisplacement: 229cc\u003c\/li\u003e\n\u003cli\u003eStroke: 58.00mm\u003c\/li\u003e\n\u003cli\u003eClearance: 0.06mm\u003c\/li\u003e\n\u003cli\u003eDome Volume: -4.70cm³\u003c\/li\u003e\n\u003cli\u003eCompression Height: 23.80mm\u003c\/li\u003e\n\u003cli\u003eCross-Reference OEM Part Numbers\u003c\/li\u003e\n\u003cli\u003eLock P\/N: CW16\u003c\/li\u003e\n\u003cli\u003ePin P\/N: WP041\u003c\/li\u003e\n\u003cli\u003eRing Set P\/N: 725XDS\u003c\/li\u003e\n\u003cli\u003eVehicle Fitments\u003c\/li\u003e\n\u003cli\u003eYamaha YFM250 Timberwolf (1990-2000)\u003c\/li\u003e\n\u003cli\u003eYamaha YFB250 Bear Tracker (2000-2004)\u003c\/li\u003e\n\u003cli\u003eYamaha Bruin (2005-2006)\u003c\/li\u003e\n\u003cli\u003eYamaha Big Bear (2007-2009)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eNo separate vehicle-fitment table record was supplied for this part. Check any application details, sizes and specifications above before ordering.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eWhy buy from FDY Performance?\u003c\/h3\u003e\u003cp\u003eFDY Performance is a UK motorcycle and ATV parts specialist. We help riders find parts with clear specifications, vehicle fitment information where available and support before ordering.\u003c\/p\u003e\u003ch3\u003eNeed help choosing the right part?\u003c\/h3\u003e\u003cp\u003eContact us with your bike make, model and year, plus the part number shown above, and we can help you check compatibility.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCall: \u003ca href=\"tel:+447765534854\"\u003e07765 534854\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eEmail: \u003ca href=\"mailto:fdy@fdyperformance.com\"\u003efdy@fdyperformance.com\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eWebsite: \u003ca href=\"https:\/\/www.fdyperformance.com\"\u003ewww.fdyperformance.com\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wossner","offers":[{"title":"Default Title","offer_id":59663759475036,"sku":"56-W4675+150.WO","price":183.51,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/6982\/0252\/files\/stock54837_1.jpg?v=1793120150","url":"https:\/\/fdyperformance.com\/products\/oro2u-56-w4675-150-wo-800c56e5","provider":"FDY performance Ltd","version":"1.0","type":"link"}