{"product_id":"cylinder-full-kit-5-60mm-big-bore-72-00mm-yamaha-2003-2025-yz-2t-250-athena-p400485100042","title":"CYLINDER FULL KIT +5.60mm BIG BORE 72.00mm YAMAHA 2003 - 2025 YZ 2T 250 ATHENA P400485100042","description":"\u003cp\u003eAthena Big Bore Cylinder Kit for Yamaha YZ 250 2T, increasing displacement to 293cc with a bore diameter of 72.00mm (+5.60mm over stock). Engineered in Italy, this kit includes a high-quality aluminum cylinder with a nickel-silicon coating for durability and wear resistance. Designed for direct installation without modifications to the engine crankcase.\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\u003eIncreases displacement to 293cc\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eBore diameter: 72.00mm (+5.60mm over stock)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCompression ratio: 15.0:1\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eNickel-silicon coated for wear resistance\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eIncludes all necessary components for installation\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eNo modifications required to the engine crankcase\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 Diameter: 72.00mm\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eBore Gain: +5.6mm\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCompression Ratio: 15.0:1\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eDisplacement: 293cc\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eNet Weight: 3.50 kg\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eIncluded Components\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eAluminum cylinder\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCylinder head\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eComplete piston (with piston pin and rings)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eExhaust valve kit\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eGasket kit\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\u003eS4F07200006A (Piston Kit 71.95mm)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eS4F07200006B (Piston Kit 71.96mm)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eP400485160183 (Gasket Kit)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eS410485308029 (Cylinder Head)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eS410485303025 (Valve Assy Kit)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eS41316257 (Rings)\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 YZ 250 2T (2003-2025)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e","brand":"ORO2U","offers":[{"title":"Default Title","offer_id":57138740789621,"sku":"56-K156.72.CKA","price":1306.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5011\/6136\/files\/stock51909_1.jpg?v=1778201488","url":"https:\/\/www.smxoffroad.com\/fr\/products\/cylinder-full-kit-5-60mm-big-bore-72-00mm-yamaha-2003-2025-yz-2t-250-athena-p400485100042","provider":"SMXOFFROAD Ltd","version":"1.0","type":"link"}