As great as today's Dodge trucks are, they still have a few areas in need of improvement. One of these is the feared fuel-economy-robbing unit bearing assemblies found on the front axle. Since 1994, 4WD Dodge trucks have been equipped with unit bearings. This switch was made simply to save money producing the vehicles. Unit bearings actually have a longer service life than a standard hub, but they are not rebuildable. The problem with the absence of a locking hub is that there is no means of preventing the axle components from spinning while in 2WD. As a result, premature wear, reduced mileage and a heavy feel to the steering can exist. The guys at Dynatrac have a great solution for the OEM shortcomings. We ordered up their Free-spin HDHC (heavy-duty hub conversion) kit with the optional DynaLoc hubs and went to work bringing the Dodge up to snuff! Oh, and for you Ford fans, Dynatrac offers a kit for you, too!