aFe Power Gas Cat-Back Exhaust System for Honda Civic Si Coupe 2017 - 2020

Performance Gains: In testing, the cat-back exhaust system resulted in gains up to +10 horsepower and +11 lbs. x ft. of torque, as measured on our in-house dyno.Aggressive Sound: Dual, free-flowing, 304 stainless steel mufflers are used to absorb high pitch tones producing a powerful sound and unleashing more horsepower and torque potential.Dual 4-3/4" X 4-1/4" Oval Polished Stainless Steel Exhaust Tips: This dual rear-exit system features 4-3/4" X 4-1/4" oval black, angle-cut, stainless steel exhaust tips laser-etched Takeda logo for a custom appearance.Installation is a snap: This Takeda exhaust system uses all factory mounting locations providing stability and a hassle-free installation.Perfect Fit: OE-style bayonet hangers are used to maintain a stable pipe location during any driving conditions. The bayonet tip holds the hanger bushing in place for an OE style, long lasting fit.Leak-Free Seal: High quality band clamps are used for a complete 360-degree sealing surface.Emissions Disclaimer: This product does not require a CARB EO# All aFe exhaust systems are engineered and manufactured in our Corona, California facility.