{"product_id":"athena-p400250100001-standard-bore-cylinder-kit-54mm-125cc-premium-2-stroke-top-end-rebuild-kit-with-piston-gaskets-compatible-with-kawasaki-kx125-2003-2007","title":"Athena P400250100001 Standard Bore Cylinder Kit (54mm, 125cc) - Premium 2-Stroke Top End Rebuild Kit with Piston \u0026 Gaskets, Compatible with Kawasaki KX125 2003-2007","description":"\u003cp\u003eRESTORE YOUR DIRT BIKE TO PEAK OEM PERFORMANCE Bring back the crisp throttle response, razor-sharp power delivery, and factory reliability of your 125cc two-stroke engine with the Athena Standard Bore Cylinder Kit (Part No. P400250100001), a premium OEM-style replacement package engineered and manufactured in Italy. Entirely cast from high-grade aluminum and treated with a specialized Motor-Nicksil (Nickel-Silicon) coating, this cylinder guarantees exceptional thermal dissipation, minimal friction, and optimal wear resistance to match or exceed original equipment standards across the entire RPM range. This complete bolt-on kit comes fully loaded with everything required for a flawless top-end rebuild—including a precision-machined 54mm standard bore cylinder, a high-performance cast piston assembly, premium rings, wrist pin, circlips, and a specific high-tightness gasket set—allowing you to drop compression losses and refresh your engine without requiring any machining or structural engine modifications to your factory crankcase.\u003cbr\u003e\u003c\/p\u003e","brand":"Athena","offers":[{"title":"Default Title","offer_id":52666174636319,"sku":"P400250100001","price":898.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0813\/2195\/1519\/files\/P400250100001-1.jpg?v=1783608049","url":"https:\/\/massdepot.com\/products\/athena-p400250100001-standard-bore-cylinder-kit-54mm-125cc-premium-2-stroke-top-end-rebuild-kit-with-piston-gaskets-compatible-with-kawasaki-kx125-2003-2007","provider":"Mass Depot","version":"1.0","type":"link"}