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HKS Hi‑Power muffler for the Civic Si Coupe (FC3) is a direct‑fit aftermarket muffler designed to replace the factory unit with HKS’ tuned exhaust component. It provides a finished, vehicle‑specific installation intended to refine exhaust flow and character while maintaining fitment for the Civic Si Coupe FC3 without requiring custom fabrication.
HKS Hi-Power Muffler for Civic SI Coupe (FC3)
