The Cusco rear power brace for Subaru Impreza GDA/GDB is an underside member that adds structural support to the rear of the chassis. It ties key rear mounting points to reduce flex and help the suspension track more consistently under load. Intended specifically for the GDA and GDB Impreza models listed, it provides a targeted way to stiffen the rear structure for improved stability without broad modifications.
Cusco Power Brace Rear UnderSide GDA-GDB Impreza