Optimised for performance bike engines primarily fabricated from aluminium plus some steel and copper components.MX and Enduro bikes suffered for a long time with overheating problems. Riders like to keep the throttle open full most of the time, even when the bike is vitually stationery, ploughing around muddy corners etc. Ram air is in short supply and even with electric fans the water-based coolant often boils. As a tell-tale device riders often fit a hose extension from the radiator cap, which spurts over their visor when boil-over occurs. When this happens they are forced to throttle-back and often lose places. With Power Cool 180°C installed riders are able to stay on the gas and this is the reason why most factory teams use Evans.Please Note: If switching to Evans Waterless Coolant for the first time you must also purchase EVANS Hygroscopic Prep Fluid to remove any dirt, scale and residual coolant. Available in 2 litres or 5 litres (Please call if you require 25Litres).About Evan