{"product_id":"rotax-max-cylinder-head-o-ring-64x2","title":"4. 250160 Rotax Max Cylinder Head O-Ring 64x2 FPM","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max Cylinder Head O-Ring 64x2 FPM\u003c\/strong\u003e (R.250160) is the OEM large fluorocarbon (FPM\/Viton) o-ring that seals the combustion chamber insert (R.223386) to the cylinder head on all Rotax 125 MAX EVO engines. This o-ring operates directly adjacent to the combustion chamber and must withstand extreme heat and combustion pressure — the FPM (Viton) compound is specifically selected for its high-temperature resistance compared to standard NBR rubber. A leaking or deteriorated large head o-ring causes combustion gas leakage, power loss, and can allow coolant to enter the combustion chamber. Also included in the Engine Gasket Set (R.296160) and Cylinder Gasket Set (R.296161).\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eRotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/strong\u003e. Always replace at every cylinder head or combustion chamber insert removal.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.250160\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 64 x 2mm, FPM 75 (Viton)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks this o-ring individually and as part of the Cylinder Gasket Set (R.296161).\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48168038301917,"sku":"R.250160","price":9.59,"currency_code":"USD","in_stock":true}],"url":"https:\/\/cmckarting.com\/products\/rotax-max-cylinder-head-o-ring-64x2","provider":"CMC Karting","version":"1.0","type":"link"}