Borla S‑Type Cat‑Back exhaust for 2008–2014 Subaru Impreza WRX STI and 2011–2014 WRX Hatchback (2.5L turbo, manual AWD) is a bolt‑on system that increases flow by upsizing from 2.5" to 3" plumbing and can yield roughly 7%–10% horsepower gains. Made from T‑304 stainless with double‑walled polished tips, it sheds about 8 lbs, raises the muffler for 1.75" more clearance and carries Borla's Million‑Mile Warranty.
Borla 08-14 Subaru STi / 11-14 WRX Catback Exhaust