The amount of heat a rotary motor puts out is far greater then most standard designed engines. For high performance needs, keeping a cars engine temperatures down and efficient is EXTREMELY important. Agency Power now offers this 5 ply silicone radiator hose kit for your Mazda RX8. These hoses replace both the top and bottom factory hose. The OEM rubber hose tends to burst under extreme heat and crack over time. These silicone hoses improve flow and are not affected by heat like rubber hoses. Each hose kit includes new clamps for easy installation.