Energy Suspension Motor and Transmission Mounts Energy Suspension Motor and Transmission Mounts offer true performance application components for Tractors, Tractors, hot rods and racing and competition vehicles, yet designed to be also used for street vehicles. Made of HYPER-FLEX(TM) performance polyurethane, they are resistant to under vehicle fluids such as oils, coolants and road contaminants. Soft running enough to absorb vibrations for street use yet rugged for racing use. Replaces the original, short lived and typically too-soft rubber mounts and outdates those hard-running metal motor and transmission mounts. Helps control torque on high performance vehicles. When required, a torque resistant "safety interlock" design is used that is comparable in strength to those too hard-running metal mounts.,