The BORLA(r) love affair with Porsche goes back many decades. In fact, Alex Borla began his racing career driving endurance Porsches in Europe. The BORLA(r) Cat-Back(tm) Exhaust for the 997S model of the revered 911 Carrera is a perfect blend of exceptional performance and that exclusive quality BORLA(r) sound. The BORLA(r) Cat-Back(tm) for this 997S Carrera 911 (PN140272) is a full dual system which, thanks to the lightweight high quality T-304 stainless steel construction, is actually more than 10% lighter than the factory single muffler system. This 2-?" system is tuned for the turbo Boxster engine, boasting an impressive 325cfm greater air flow while generating solid double-digit horsepower numbers and torque gains in the mid-twenties. The BORLA(r) 140272 features four 3-1/2" Mirror Polished Round Rolled Angle-Cut T-304 Stainless Steel Tips and boasts horsepower numbers in the high teens - all with a simple bolt on. Isn't it time to step up to BORLA(r) -- the original pioneers of high quality, T-304 stainless steel (superior to 409 or aluminized steel) free-flow exhaust utilizes patented award and race winning technology to deliver quality, sound, performance gains and enhanced fuel economy - all with an easy bolt-on installation. All street systems are back with an unsurpassed written Million-Mile warranty.