This Borla Cat-Back system is designed specifically for the 1.6L engine in the GR Corolla. The system contains 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 and the dual mufflers deliver the aggressive ATAK sound with no drone. The system has an Active Exhaust Valve. It features 4 carbon fiber with black anodized center tips, 2) 3.5 in. round (center) and 2) 4.5 in. round (outer) tips. Borla Cat-Back and 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. Ultra-smooth mandrel bends ensure maximum flow and power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit.

140942CFBA ATAK Cat-Back Exhaust System Features:

• 3 in. diameter
• It features 4 carbon fiber with black anodized center tips, 2) 3.5 in. round (center) and 2) 4.5 in. round (outer) tips
• Built from premium t-304 stainless steel
• 3 in. diameter system
• System features polyphonic harmonizer technology
• Dual muffler design
• Contains an active exhaust valve