A true performance application component for cars, trucks, hot rods. For racing/competition, yet popularly used for street vehicles when more horsepower is added. Soft running enough to absorb vibrations for street use yet rugged for racing use. Helps control torque on high-performance vehicles. Maintains proper drive shaft angle to help prevent early wear and unexpected powertrain damage. Replaces the original, short-lived and typically too-soft rubber mounts and outdates those hard-running metal transmission mounts. Resistant to under vehicle fluid oils, coolants and road contaminants. Made of Energy's Hyper-Flex(TM) performance polyurethane and heavy-duty hardware - for added durability.