Quick view Energy Suspension Energy Suspension 07-11 Jeep JK 4dr Red Hyper-Flex Master Bushing Set - 2.18108R Compare $1,176.30 $764.99 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