This Borla(r) Cat-Back(tm) 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(r) sound with no drone in the cabin. 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.

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. Best of all, Borla(r) 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. 

Vehicle Fitment:
2022-2025 Subaru WRX Automatic or Manual Transmission .

FEATURES:

• 4.5" brushed T-304 stainless steel tip with Borla(r) laser cut logo
• Extended Polyphonic Harmonizer muffler core design
• Single system exits in the rear passenger side
• Laser welded muffler end caps