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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 gains of 7% - 10%. Hardcore enthusiasts who add Stage 1 or 2 chip upgrades will find this boost to the Stir'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(r)'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 rear-section aerodynamics and improves appearance by reducing clutter. Besides being higher, it's lighter. Thanks to Borla(r)'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 Stir's distinctive rumbling gurgle with the rich bass of Borla(r)'s trademark sound of power. Combined with high-quality T-304 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(r), the original pioneers of high-quality 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.

If you must return part or all of your purchase to your retailer, call first. If for any reason your retailer must return part of your purchase to us, he will need information, including a customer service number, to speed shipment and processing, so that we can get your purchase back to you as quickly as possible.

Pack carefully; we cannot accept product damaged in shipment.

BORLA® PERFORMANCE INDUSTRIES, INC. warrants its products to the original purchaser of record and for the original vehicle on which the product was installed against defects in materials and workmanship for one million miles with the following exceptions. BORLA® will warranty all EV products for 2 years from the purchase date. BORLA® will warranty black coatings, tip finishes, carbon fiber and moving parts including but not limited to valves and actuators for one year. This does not include blemishes or marring of appearance due to weather, road hazards, lack of maintenance or extremes of heat or cold. This warranty shall apply only if BORLA's examination of the returned product discloses a manufacturing or material defect, and BORLA's sole obligation under this warranty shall be limited to repair or replacement at BORLA's option. Note all attachment to universal mufflers must be made at the nipples; there should be no welding to the shell or end caps as this will void the warranty. No expressed or implied warranties of merchantability or fitness for a particular purpose are hereby made except as otherwise expressly provided herein. In no event shall BORLA® PERFORMANCE INDUSTRIES, INC. or any BORLA® Dealers or Distributors be liable for any loss, inconvenience or damage, whether direct, incidental, consequential or otherwise.

If you have any problems with a BORLA® product, involving either installation or performance, please call the company you bought it from immediately. BORLA® Distributors will take all necessary steps to ensure you are satisfied.

Because sound is subjective, we do not warranty for sound. Please do not return your BORLA® product if you do not like the sound level. There are several ways to adjust the sound level. You can obtain venturies, for example, from your retailer that you can place in your system to quiet your system.

This warranty does not include the cost of removal or reinstallation of the product, and does not apply if the product has been damaged by accident, abuse, misuse, or misapplication. This warranty is valid for BORLA® street-legal products only and does not apply to any racing products or street products used for racing purposes. Any modifications to the product or its intended use voids the warranty. No person or representative is authorized to extend any warranties on behalf of BORLA, other than the warranty expressed herein. Some states do not allow limitations on how long an implied warranty lasts, so the above limitations may not apply to you. Some states do not allow the exclusion of limitations of incidental or consequential damages, so the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights, and may have other rights which vary from state to state. This warranty replaces all previous warranties.

Products sold outside of the USA and Canada carry a 3-year limited warranty. Products that carry a million mile warranty in the USA, carry a million mile / 1.6 ​million kilometer warranty in Canada.

Borla

Borla Performance Industries is the leading manufacturer of premium exhaust systems, renowned for their unparalleled quality, durability, and innovation. Designed and crafted in the USA, Borla exhausts are engineered to enhance performance, improve fuel efficiency, and deliver a distinctive, aggressive sound. With a focus on precision fitment and stainless steel construction, Borla offers exhaust solutions for a wide range of vehicles, from street cars to high-performance race machines, making them the choice of automotive enthusiasts worldwide.

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