The front wheel bearing has a reverse direction, because the front wheel bearing is a tapered bearing. Of course, it must be divided into two directions. If installed backwards, the tire will not fit. The steel ball of the tapered bearing is a big one. One end is small, so the bearing will be larger at one end and smaller at the other. If the wheel hub is installed backwards, it cannot be installed. It is a dead position. Therefore, the front wheel bearings are in forward and reverse directions.