The BORLA love affair with Porsche goes back many decades. In fact, Alex BORLA began his racing career driving endurance Porsches in Europe. The new BORLA Cat-Back Exhaust for the 997S model of the revered 911 Carrera is a perfect blend of exceptionl performance and that exclusive quality BORLA sound. The Borla Cat-Back for this 997S Carrera 911 (PN140272) is a full dual system which, thanks to the lightweight high quality austenitic stainless steel construction, is actually more than 10% lighter than the factory single muffler system. This 2-¼” 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 140272 features four 3-1/2” Mirror Polished Round Rolled Angle-Cut Stainless Tips and boasts horsepower numbers in the high teens - all with a simple bolt on. Isn’t it time to step up to Borla -- the original pioneers of high quality, austenitic 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.