It is an aluminum front lower A arm set that you can use for the YD - 2 / YD - 4 series. By shortening the arm length further than the resin short arm, eliminating interference with the wheel further increases the cutting angle, enabling driving at a deeper drift angle. In addition, it is effective for improving the ground contact feeling of the front due to an increase in weight, improving the steering response by increasing the rigidity, and so on.
Long type rod end adapters etc are also set, so if you are in YD - 2 series you can exchange with bolt on. A arm body is made of aluminum subjected to bevel edge treatment, finish with a sense of quality.