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The Cusco lower rear arm power brace is a chassis reinforcement for the Civic FD2/Si platform, designed to stiffen the rear subframe mounting area and improve suspension geometry under load. As a structural brace it reduces flex where the lower rear arm attaches, providing cleaner handling feedback and more consistent suspension behavior during spirited driving or track use without altering factory suspension components.
Cusco Power Brace Lower Rear Arm FD2 Civic Si
