Phantom Racing Parts Steele Rubber Products introduces the largest line of spring rubbers and bump stops in competitive racing: Phantom Racing Products. For years, Steele has supplied the highest levels of competitive teams with spring rubbers, but now these parts are available to the public and teams at every level of racing. The Phantom Racing Products brand of rubber suspension parts represents years of success on the track, from testing to race day. Phantom is also the exclusive provider of Dual Coil Spring Rubbers, the next generation of spring rubber components.