Alum. Rear Upper Deck Adapter for RD/SD

This aluminum adapter replaces the upper deck mount and directly connects the upper deck and rear brace. By eliminating the connection point with the main chassis in the center, it reduces the chassis's roll rigidity and increases torsional rigidity, thereby improving handling stability. Depending on the type of main chassis, the elimination of the rear brace also allows the battery to be mounted further back, increasing the rear load.