Injen Catback Exhaust WRX / STI (2015-2018) Acura ACT gives extra effort to

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

- 4130 Cr-Mo steel

The bar is formed utilizing a 1" round 6061-T6 aluminum tubing with 1/4" thick wall for the perfect balance between stiffness and weight

The intersection of performance and sophistication

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

Injen Catback Exhaust WRX / STI (2015-2018) Acura ACT gives extra effort toInjen'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+