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The Cusco seat-rail power brace for the FD2 Civic Si is an interior-mounted reinforcement that ties seat mounting points into the chassis. It reduces localized flex during spirited driving and enhances driver feedback by stabilizing the seating area. Designed to fit FD2 Civic Si seat rails, the brace installs without major modification and improves driver confidence under hard cornering and track use.
Cusco Power Brace Seat Rail (interior) FD2 Civic Si
