The aFe Takeda dual cat-back exhaust for 2015–2020 Subaru WRX and WRX STI is a direct bolt-on system featuring 3" into 2-1/4" mandrel-bent 304 stainless tubing, dual high-flow mufflers and quad 3.5" blue-flame stainless tips. Mitered merge and TIG-welded construction improve scavenging and flow; in-house dyno testing showed gains up to +14 horsepower and +22 lb-ft of torque while delivering an aggressive yet controlled exhaust tone.
aFe Takeda 3in 304 SS Cat-Back Exhaust System 15-18 Subaru WRX/WRX STI H4-2.0/2.5L (t)