A true performance application component for cars; trucks; hot rods and racing and competition vehicles - yet designed to be also used for street vehicles. Soft-running enough to absorb vibrations for street use yet rugged for racing use. When required- a torque resistant safety interlock design is used that is comparable in strength to those too hard-running metal mounts. Replaces the original; short lived and typically too-soft rubber mounts and outdates those hard-running metal motor mounts. The popular early style mounts for General Motors(R) vehicles are available in either zinc or chrome metal finishes. Made of Hyper-Flex(TM) performance polyurethane. Resistant to under vehicle fluid oils; coolants and road contaminants.