Borla 08-14 Subaru STi / 11-14 WRX Catback Exhaust Drivetrain>Clutch Kits - Multi This system features a 4"

This system features a 4" x 16" 304 stainless steel resonator to reduce drone

and an under frame design

Carbon Fiber Accent are provided for car show quality and to further distinguish your vehicle from others

It creates a convenient room for changing clothes

Borla 08-14 Subaru STi / 11-14 WRX Catback Exhaust Drivetrain>Clutch Kits - Multi This system features a 4"Borla(r) Performance offers a quad exit Cat Back(tm) exhaust for the venerable 2008 2014 Subaru WRX STI. This race inspired system (PN140312) checks all the boxes on every Subaru enthusiasts hit list, taking this flagship to an even higher realm, of performance. For starters, Borla(r) engineers upgraded the Stir's exhaust plumbing from 2. 5" to 3" in diameter. The resulting increased airflow through the turbocharged powerplant provides horsepower