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The HKS sport exhaust for the 2007–2009 Civic Si sedan replaces the stock system with a tuned catback featuring titanium tips for a more refined outlet. It’s presented as a direct-replacement exhaust aimed at improving sound and appearance while maintaining legal fitment where applicable. The description identifies this as a vehicle-specific catback for the specified Civic Si sedan years and trims.
HKS 07-09 Civic Si Sedan Sport Exhaust Ti Tips
