{"product_id":"ref-56-k156-72-pib","title":"ATHENA FORGED PISTON KIT YAMAHA YZ250 2003-2024, 72mm BIG BORE","description":"\u003cbody\u003e\n\n\n\n\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003eAthena Forged Racing Piston Kit Ø 71.96 mm is designed for the Athena Big Bore Cylinder, offering high-performance durability and precision engineering. Manufactured using advanced CNC machining for tight tolerances of less than 0.01 mm, this piston is made from a high-performance aluminum alloy with a high silicon content for enhanced strength and reliability. The piston’s smooth profile promotes optimal flow and flame propagation, while certain models feature a molybdenum disulfide coating on the skirt to reduce friction. Engineered and tested in Italy under extreme conditions, this piston kit ensures excellent performance and longevity.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eForged piston with high-performance aluminum alloy construction\u003c\/li\u003e \t\u003cli\u003eCNC-machined for dimensional accuracy within 0.01 mm\u003c\/li\u003e \t\u003cli\u003eHigh silicon content for strength and durability\u003c\/li\u003e \t\u003cli\u003eSmooth profile for optimized flow and combustion\u003c\/li\u003e \t\u003cli\u003eSome models include molybdenum disulfide skirt coating for reduced friction\u003c\/li\u003e \t\u003cli\u003ePiston rings with low-friction design for improved performance\u003c\/li\u003e \t\u003cli\u003eJapanese-made piston rings with wear-resistant coatings (PVD or chromium nitride)\u003c\/li\u003e \t\u003cli\u003eIncludes piston, pin, circlips, and piston rings\u003c\/li\u003e \t\u003cli\u003eDesigned exclusively for competitive use\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eBig End Pin Diameter: 18x13x53.5 mm\u003c\/li\u003e \t\u003cli\u003eBore Diameter: 71.96 mm\u003c\/li\u003e \t\u003cli\u003eCompression Ratio: 16.0:1\u003c\/li\u003e \t\u003cli\u003eDisplacement: 250 cc\u003c\/li\u003e \t\u003cli\u003eNet Weight: 0.34 kg\u003c\/li\u003e \t\u003cli\u003eNumber of Segments: 3\u003c\/li\u003e \t\u003cli\u003ePiston Head Type: Domed\u003c\/li\u003e \t\u003cli\u003ePiston Pin Type: Biconical\u003c\/li\u003e \t\u003cli\u003ePiston Type: Forged\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eS4F07200006A Piston Kit 71.95\u003c\/li\u003e \t\u003cli\u003eS41316257 Rings\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eYamaha YZ 250 2T (2003-2025)\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":55594630807926,"sku":"REF 56-K156.72.PIB","price":218.96,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/7032\/3318\/files\/stock51911_1.jpg?v=1746727232","url":"https:\/\/n0jgtc-nz.myshopify.com\/products\/ref-56-k156-72-pib","provider":"AW Motorcycle Parts","version":"1.0","type":"link"}