Energy's Hyper-Flex(TM) is superior performance polyurethane which has proven itself under the most demanding conditions on the race track; off-road and street performance driving; Hyper-Flex(TM) components do not wear or deteriorate from exposure to undercar chemicals such as oils and coolants and withstand atmospheric conditions like UV exposure and pollutants. Impervious to these elements; Energy's Hyper-Flex(TM) components are a great value. Not only will it outlast rubber 5 to 1 but are a cost effective performance improvement for your car or truck. Whether domestic or import; front; rear or 4WD; old or new; your vehicle will achieve that level of performance that has made Energy Suspension the most asked-for name in performance polyurethane components. All Hyper-Flex(TM) components are proudly Made in America and are available in red or black.