Once again Dynatrac signed up as the official axle of Ultimate Adventure, so we headed down there to see how they would build our pigs this year. Another benefit of using a low-pinion Dana 44 is that the centersections are still available brand new, where there are no new castings of the high-pinion variant, and Dynatrac strives to put brand-new parts in every axle it builds. When we arrived they had machined the 3-inch tubes to step down and fit into the housing. Dynatrac presses the tubes into the centersection and plug-welds them. No butt welding here!