{"product_id":"piston-kit-yzf-wrf-250-2-ring-wossner-8713dc-08-13-77mm","title":"PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm","description":"\u003cp\u003eWossner forged piston kit with a 77.02mm bore and 76.98mm diameter, designed for Yamaha YZ250F and WR250F models. This 2-ring piston is engineered for high performance, featuring superior strength and design. Manufactured in Germany, it ensures 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.\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eForged construction for superior strength\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eOptimized heat transfer for efficient combustion\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eElliptical design for uniform load distribution\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e2-ring piston design for performance applications\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eIncreased compression ratio for improved power output\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eManufactured in Germany\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eBore: 77.02mm\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eDiameter: 76.98mm\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eDisplay (cm³): 249\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eStroke (mm): 53.60\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eClearance (mm): 0.04\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eWossner Compression Ratio: 14.10:1\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eOEM Compression Ratio: 13.50:1\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eDome Volume (cm³): -5.00\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCompression Height (mm): 22.50\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eWossner Piston Yamaha YZ250F (PN# 8713DC)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eLock P\/N: CW16\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePin P\/N: WP059\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eRing Set P\/N: 770XAS\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eRod P\/N: P4005\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eYamaha YZ250F (2008-2013)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eYamaha WR250F (2008-2013)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e","brand":"ORO2U","offers":[{"title":"Default Title","offer_id":57151082561909,"sku":"56-W241+00C.WO","price":201.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5011\/6136\/files\/stock54107_1.jpg?v=1778374097","url":"https:\/\/www.smxoffroad.com\/products\/piston-kit-yzf-wrf-250-2-ring-wossner-8713dc-08-13-77mm","provider":"SMXOFFROAD Ltd","version":"1.0","type":"link"}