With the new TC pump mounted in place, Lavender turned his attention to fortifying the high-steer arms that came with the Dynatrac Pro-80 rear axle. As you can see from this photo, it didn't take much to make the arms suitable for our needs. Basically, he made these arms to be double-shear instead of single-shear in design. Double-shear-arrangements such as this are advantageous because they distribute the stress between two points rather than one. This mounting method is common in the competitive rock-racing arena. The additional strength afforded by the upper brace ensures that both the mounting bolt and arm survive against the leverage of 54-inch tires.