Injen Catback Exhaust WRX / STI (2015-2018) Acura - 4130 Cr-Mo steel

- 4130 Cr-Mo steel

rich intake tone

ACT gives extra effort to strategically slot XACT ProLite flywheels to lower inertia without sacrificing strength and heat dissipation

The specific timing of when the reflected sound waves rejoin the main exhaust flow creates a one-hundred-and-eighty-degree out-of-phase sound wave that cancels out problematic frequencies

All of these together will give you a 10-40 HP INCREASE

Injen Catback Exhaust WRX / STI (2015-2018) Acura - 4130 Cr-Mo steelInjen's catback exhaust system for the 2015+ Subaru WRX STI features 60mm 304 stainless steel construction throughout and utilizes all factory mounting points. Dual oval mufflers provide a deep tone while the quad titanium burnt tips fit perfectly in the factory bumper cutouts. Features: 60mm 304 Stainless Steel Construction CNC Machined Flanges Mandrel Bent Quad Titanium Burnt Tips High Flow Mufflers Made in USA! FITMENT: Subaru WRX STI (2. 5L) 2015+