Borla S-Type Cat-Back Exhaust For 08-14 Subaru Impreza WRX STi/Hatchback 2.5L cables mandrel-bend construction that allows for

mandrel-bend construction that allows for full flow through the bends

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Borla S-Type Cat-Back Exhaust For 08-14 Subaru Impreza WRX STi/Hatchback 2.5L cables mandrel-bend construction that allows forBORLA Performance offers a quad exit Cat Back exhaust for the venerable 20082014 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 engineers upgraded the STis exhaust plumbing from 2. 5" to 3" in diameter. The resulting increased airflow through the turbocharged power plant provides horsepower gains of 7% 10%.