Borla's ATAK Cat-Back system is designed specifically for the 2.4L engine in the WRX. The 3" diameter single exit Cat-Back™ system features 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 aggressive ATAK® sound with no drone in the cabin. If you like louder exhausts that have a clean tone, this is what you are looking for.

The system exits in the rear on the passenger side and features laser welded muffler end caps for a clean appearance. Extended Polyphonic Harmonizer muffler core design exits inside the 4.5" brushed T-304 stainless steel tip for a custom look. The tip has a laser cut BORLA® logo.

BORLA® Cat-Back™ and Axle-Back exhaust systems feature patented straight-through and multi-core technology designed 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 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.

Features:

• Single system exits in the rear passenger side
• 3 inch system
• Laser welded muffler end caps
• Extended Polyphonic Harmonizer muffler core design
• 4.5" brushed T-304 stainless steel tip with BORLA® laser cut logo
• No drone

Best of all, BORLA® stands behind every system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.