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Injen cat-back exhaust for 2015–2021 Subaru WRX and WRX STI features dual straight-through mufflers, stepped piping and quad titanium-look tips to refine tone and flow while using factory mounting points for bolt-on fitment. Constructed from 304 stainless steel with V-band clamps and investment-cast flanges for easier installation, the system aims to improve sound and driveability while maintaining strong corrosion resistance and show-quality finishes.
Injen 15-20 Subaru STI Cat Back Exhaust w/ Quad Titanium Tips
