IR Bushing Replacement Tool Kit TeraFlexThe TeraFlex IR Bushing Replacement Tool Kit for long and short adjustable Alpine Control Arms and preset Sport Control Arms makes swapping your factory style bushings over to our innovative IR Bushings as simple as it gets. The easy to use replacement tool Requires two open end wrenches or sockets to install IR Bushings into your existing control arms. A bench vise is helpful, but not Required. Can also be used to replace existing IR bushings. JL