One of the least expensive and most effective lifetime maintenance items SuperPro offers. Our polyurethane dust boots replace thin fast-wearing rubber boots to offer greater protection, considerably longer service life and peace of mind. Impervious to the elements and making use of superior materials means that replacing your ball joint and tie rod boots with SuperPros upgrade options make these the last boots youll buy. Keeping contaminants out of your ball joints allows them to operate properly and avoids excess wear or damage.