aFe is proud to introduce the aFe MACH force-Xp cat-back exhaust system for the 2005-2008 Porsche Boxster/S and 2006-2008 Cayman/S (987.1). In recent testing with the aFe dual tip assembly, this exhaust system resulted in a max gain of 29 horsepower and 40 lbs. x ft. of torque. aFe spent countless hours of R& D to develop the perfect balance of pure, race-inspired performance and in-cabin driving comfort and excitement of exhaust sound and tone during normal cruising or aggressive hard throttle. Realizing that the OE exhaust tip could be improved, aFe designed a special dual 4" brushed finish, aFe laser-etched, 304 stainless steel, slash-cut exhaust tip assembly that is more free-flowing that the stock tip assembly. This exhaust system comes with a brushed finish and is 100% Hand TIG-Welded for a perfect, precise fit and a complete bolt-on installation. No modifications necessary.