Part #140312

2008-2014 Subaru WRX Cat-Back Exhaust System S-Type Part # 140312

IMP WRX STI '08-'14/WRX '11-'1 140312
BUY DIRECT MSRP: $1,534.99

BORLA® Performance offers a quad-exit Cat-Back™ 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 realmof performance.

For starters, BORLA® engineers upgraded the STI‘s exhaust plumbing from 2.5 to 3” in diameter. The resulting increased airflow through the turbocharged powerplant provides horsepower gains of 7% - 10%. Hardcore enthusiasts who add Stage 1 or 2 chip upgrades will find this boost to the STI‘s lung capacity vital to unlocking the ECU‘s full potential.

Drivers negotiating terrain from rally course jumps to shopping mall speedbumps will appreciate how BORLA®‘s R&D fabricators found room to tuck the system muffler higher than the OE exhaust, providing a 1.75” clearance gain. This additional room also enhances back of the vehicle aerodynamics and improves appearance by reducing clutter.

Besides being higher, it‘s lighter. Thanks to BORLA®‘s patented straight-through design that eliminates power-robbing baffles and chambers, the STi sheds approximately 8 lbs., making it a bit leaner meaner in a class where every bit counts.

True to form, the exhaust amplifies and enhances the STi‘s distinctive rumbling gurgle with the rich bass of BORLA®‘s trademark sound of power. Combined with high-quality austenitic stainless steel construction and double-walled rolled-edge polished T-304 stainless steel tips, drivers get the sound and looks they expect from the world‘s most winning exhaust.

BORLA®, the original pioneers of high-quality T-304 stainless steel free-flow exhaust, utilizes patented award and race winning technology to deliver quality, sound, and performance gains. All with an easy bolt-on installation, and backed by a solid Million-Mile Warranty on all street systems.

Warranty Valve Note: BORLA only warranties moving parts, such as valves and actuators for one year. This system includes functioning active exhaust valves, similar to those in the stock exhaust, and is recommended for most customers. Active exhaust valves in this system will improve sound quality.
Warranty Valve Simulator Note: BORLA only warranties moving parts, such as valves and actuators for one year. This system includes active exhaust valve simulators and is recommended for cars with significant modifications. The active exhaust valves in the stock exhaust have been removed, valve simulator mounts on the outside of the pipe allow the stock valve motors to be re-attached to prevent an error code.
Warranty Finish Note: BORLA exhaust systems are covered under our Million-Mile warranty with the following exceptions. Borla will warranty black coatings, tip finishes, and carbon fiber parts for one year.
WARNING: This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing, or thermal cutting can expose you to chemicals including Chromium, Nickel, Cobalt, Arsenic, Cadmium and Lead which are known to the State Of California to cause cancer, birth defects and other reproductive harm. For more information go to
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