{"product_id":"piston-kit-08-12-wr250x-77-00-comp-13-5-1-wossner-8729dc","title":"PISTON KIT 08-12 WR250X 77.00, COMP. 13.5:1 WOSSNER 8729DC","description":"Wossner forged piston kit with a 77.02mm bore and 76.98mm diameter, designed for Yamaha WR250X models. Manufactured in Germany, this piston offers superior strength and design, ensuring optimal heat transfer to cylinder walls. Its elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse.\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eForged construction for superior strength\u003c\/li\u003e\n\t\u003cli\u003eOptimized heat transfer for efficient combustion\u003c\/li\u003e\n\t\u003cli\u003eElliptical design for uniform 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: 77.02mm\u003c\/li\u003e\n\t\u003cli\u003eDiameter: 76.98mm\u003c\/li\u003e\n\t\u003cli\u003eDisplay (cm³): 249\u003c\/li\u003e\n\t\u003cli\u003eStroke (mm): 53.60\u003c\/li\u003e\n\t\u003cli\u003eClearance (mm): 0.04\u003c\/li\u003e\n\t\u003cli\u003eWossner Compression Ratio: OEM\u003c\/li\u003e\n\t\u003cli\u003eOEM Compression Ratio: 11.80:1\u003c\/li\u003e\n\t\u003cli\u003eDome Volume (cm³): -5.90\u003c\/li\u003e\n\t\u003cli\u003eCompression Height (mm): 22.90\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\u003eWossner Piston Yamaha WR250X (PN# 8729DC)\u003c\/li\u003e\n\t\u003cli\u003eLock P\/N: CW17\u003c\/li\u003e\n\t\u003cli\u003ePin P\/N: WP083\u003c\/li\u003e\n\t\u003cli\u003eRing Set P\/N: 770XAS-2\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 WR250X (2008-2009)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e","brand":"Wossner","offers":[{"title":"Default Title","offer_id":50697768632586,"sku":"56-W238+00C.WO","price":184.05,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0846\/0094\/6954\/files\/stock54095_1.jpg?v=1738345809","url":"https:\/\/store.phoenixmotos.com\/products\/piston-kit-08-12-wr250x-77-00-comp-13-5-1-wossner-8729dc","provider":"Phoenix Motos","version":"1.0","type":"link"}