{"product_id":"piston-kit-2014-yzf250-77-0-hc-forged-wossner-8894da-1sm-11631-01-00","title":"PISTON KIT 2014 YZF250 77.0 HC, FORGED WOSSNER 8894DA, 1SM-11631-01-00","description":"\u003cp\u003eThis Wossner forged piston kit, part number 8893DA, features a standard 77.00mm bore with an actual piston size of 76.95mm. It is designed for Yamaha YZF250 models from 2014 to 2015. Manufactured in Germany, this high-compression piston is built for performance, providing increased compression over OEM specifications. Its elliptical design ensures even load distribution and optimal thermal expansion resistance.\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 superior strength and durability\u003c\/li\u003e\n\t\u003cli\u003eHigh compression design for increased engine performance\u003c\/li\u003e\n\t\u003cli\u003eElliptical profile for uniform expansion and balanced thrust load distribution\u003c\/li\u003e\n\t\u003cli\u003eOptimized for combustion heat transfer\u003c\/li\u003e\n\t\u003cli\u003eMade in Germany\u003c\/li\u003e\n\t\u003cli\u003eDirect OEM replacement\u003c\/li\u003e\n\t\u003cli\u003eEasy to install; professional installation recommended if unsure\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: 77.00mm\u003c\/li\u003e\n\t\u003cli\u003eActual Piston Size: 76.95mm\u003c\/li\u003e\n\t\u003cli\u003eDisplacement: 249cm³\u003c\/li\u003e\n\t\u003cli\u003eStroke: 53.60mm\u003c\/li\u003e\n\t\u003cli\u003eClearance: 0.05mm\u003c\/li\u003e\n\t\u003cli\u003eDome Volume: -3.00cm³\u003c\/li\u003e\n\t\u003cli\u003eWossner Compression Ratio: 13.70:1\u003c\/li\u003e\n\t\u003cli\u003eOEM Compression Ratio: 13.50:1\u003c\/li\u003e\n\t\u003cli\u003eCompression Height: 20.20mm\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\u003e1SM-11631-01-00\u003c\/li\u003e\n\t\u003cli\u003eCW16 (Lock)\u003c\/li\u003e\n\t\u003cli\u003eWP087 (Pin)\u003c\/li\u003e\n\t\u003cli\u003e770XAS-2 (Ring Set)\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\u003eYZF250 (2014–2015)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wossner","offers":[{"title":"Default Title","offer_id":51391902875914,"sku":"56-w4962.a.wo","price":181.55,"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-W4962.A.WO.jpg?v=1750687803","url":"https:\/\/2bros-mx.com\/products\/piston-kit-2014-yzf250-77-0-hc-forged-wossner-8894da-1sm-11631-01-00","provider":"2bros-mx.com","version":"1.0","type":"link"}