Quick view Energy Suspension Energy Suspension 99-04 Ford F-250 4WD Superduty Black Hyper-flex Master Bushing Set - 4.18124G Compare $606.30 $404.99 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... Add to Cart Add to Cart