More Aggressive "S-Type" Cat-Back. The mellow "Touring" Cat-Back exhaust is part# 140053, Borla Performance once again leads the industry with a high flow performance exhaust for the hot Subaru WRX and WRX STI. This Cat-Back system, Borla #140075, is custom designed by Borla engineers for the 2.5L turbocharged 4-cylinder engine with automatic and manual transmissions. Winning on racetracks around the world has given Borla a leg up on the competition with trickle down technology from the world ?s fastest cars. The unique design is a direct bolt-on fit that meets all emission requirements. The system has shown significant flow and performance improvements by virtue of Borla XR-1? patented technology utilizing 3" tubing that exits with a super looking Borla logo embossed 4"angle cut, rolled edge, single round polished tip. More flow means more power, and if you tune this turbocharged super import, that flow will simply allow even more power. When you get a close look inside this muffler, you can see the patented Borla XR-1? multi cores -- that look says total performance. Increased fuel mileage is an added benefit. And, one more thing, it has a great sound, too, but then you?ve come to expect that from Borla. Add a Borla header (#17217) for even more performance. Borla Performance Industries, the original pioneers of high quality T-304 stainless steel (superior to T-409 or aluminized steel) free flow exhaust utilizes its patented award and race winning technology to deliver quality, sound, performance gains and enhanced fuel economy ? all with an easy bolt-on installation. All Borla street products carry the famous Borla written million-mile warranty.

The BORLA® sound of power. Its been described as asonic shot of adrenaline. An intoxicating concert ofsteel, gears and combustion that echoes from thespeedways, deserts and highways of the world.The sound of more victory laps than any otherbrand, the BORLA® exhaust note has become the quintessentioal soundtrack of high-performance motoring. And like all good automotive designs there is function behing the form. As any driving enthusiast knows, the sound of an exhaust provides more than just ear candy. Its a communications conduit between car and driver. A link between human and machine. The exhaust sound provides accoustic feedback of engine rpm to aid the driver in critical decisions such as gear selection or throttle input in rev-match shifting. At BORLA®, we understand this concept better than any exhaust manufacturer. Combining patented technology with computer modeling, extensive prototyping and advanced sound analysis tools. BORLA® engineers spend countless hours tuning exhaust systems to best reflect the personality and performance of vehicle applications. The result is an enhanced driving experience. With unrivaled clarity, the BORLA® exhaust note can help a driver stay within the powerband through a difficult section, using the exciting sensory feedback of sound. With unrivaled clarity the Borla exhaust note can help a driver stay within the powerband through a difficult section, using the exciting sensry feedback of sound.

2002-2007 Subaru Impreza WRX 2.0L/ 2.5L 4 Cyl. Turbo All Wheel Drive (AWD) Automatic/ Manual Transmission 4-Door/Wagon/ 2004-2007 Subaru Impreza WRX STI 2.5L Turbo 4 Cyl. All Wheel Drive (AWD) Automatic/Manual Transmission 4-Door Sedan/Hatchback.

Borla 04-07 STi XR-1 Cat-Back Exhaust

S-Type Cat-Back Exhaust System.

S-Type; Cat-Back™ System

WRX STI 04-05 2.5L 4CYL MT

Million Mile Warranty

Borla-Cat-Back System

Exhaust System Kit

Borla - Cat-Back

ExhstSysKt

Cat-Back