BORLA Cat-Back exhaust system for the Acura Integra and Civic Si features BORLA's Polyphonic Harmonizer Technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean, rich, full-bodied sound to the BORLA mufflers. The muffler then enhance this sound to the character and volume appropriate for the aggressive ATAK sound level that this system delivers. System features 4.5" bright chrome on T-304 stainless steel tips. Systems with black chrome on T-304 stainless steel and carbon fiber with black anodized centers are also available.

BORLA Cat-Back & Axle-Back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA Sound of Power respected by motoring enthusiasts everywhere.

Each system is built from premium T-304 austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit.