{"product_id":"ref-56-w4962-c-wo","title":"WOSSNER 77mm HC PISTON KIT YAMAHA YZ250F 14-15, WR250F 15-17, YZ250FX 15-16","description":"\u003cbody\u003e\n\n\n\n\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003eThis Wossner forged piston kit, part number 8893DC, features a 77.02mm bore with an actual piston size of 76.97mm (+0.02mm oversize). Designed for Yamaha YZF250 models from 2014 to 2015, it is a high-compression piston made in Germany. Its elliptical design enhances strength, distributes load evenly, and supports optimal heat transfer for high-performance four-stroke engines.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eForged piston construction for high strength and reliability\u003c\/li\u003e \t\u003cli\u003eHigh compression design for increased performance\u003c\/li\u003e \t\u003cli\u003eElliptical profile for balanced expansion and load distribution\u003c\/li\u003e \t\u003cli\u003eEngineered for effective combustion heat transfer\u003c\/li\u003e \t\u003cli\u003eMade in Germany\u003c\/li\u003e \t\u003cli\u003eDirect OEM replacement\u003c\/li\u003e \t\u003cli\u003eEasy to install; professional installation recommended if unsure\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eBore Size: 77.02mm\u003c\/li\u003e \t\u003cli\u003eActual Piston Size: 76.97mm\u003c\/li\u003e \t\u003cli\u003eDisplacement: 249cm³\u003c\/li\u003e \t\u003cli\u003eStroke: 53.60mm\u003c\/li\u003e \t\u003cli\u003eClearance: 0.05mm\u003c\/li\u003e \t\u003cli\u003eDome Volume: -3.00cm³\u003c\/li\u003e \t\u003cli\u003eWossner Compression Ratio: 13.70:1\u003c\/li\u003e \t\u003cli\u003eOEM Compression Ratio: 13.50:1\u003c\/li\u003e \t\u003cli\u003eCompression Height: 20.20mm\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003e1SM-11631-01-00\u003c\/li\u003e \t\u003cli\u003eCW16 (Lock)\u003c\/li\u003e \t\u003cli\u003eWP087 (Pin)\u003c\/li\u003e \t\u003cli\u003e770XAS-2 (Ring Set)\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eYZF250 (2014–2015)\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":55594841506166,"sku":"REF 56-W4962.C.WO","price":162.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/7032\/3318\/files\/stock55433_1.jpg?v=1746719733","url":"https:\/\/n0jgtc-nz.myshopify.com\/products\/ref-56-w4962-c-wo","provider":"AW Motorcycle Parts","version":"1.0","type":"link"}