S-Type Classic sound. This system will fit vehicles with and without NPP. Borla(r) system does NOT include NPP valves. Features polished T-304 stainless steel tips. Borla(r) Performance has once again proven why we have led the aftermarket performance exhaust industry for over 40 years. Borla(r) has an exalted heritage with Chevrolet performance vehicles. From the C5R Le Mans winning Corvettes to privateers like KTEC Pratt-Miller Lingenfelter and Lou Gigliotti who have enhanced Borla(r)'s knowledge of both the vehicle dynamics and the power-plant engineering. The C6 is a muscle car with a big powerful engine on a sophisticated sexy chassis. Borla(r) has always used the transfer of technology from racing to the street as a tool and the C6 and C6 Z06 play right into that wheelhouse. With an experienced R&D staff the Borla(r) team has given the C6 the attention it deserves by rolling out several systems for the Corvette. Airflow management and exhaust engineering is a science with which Borla(r) has more experience than anyone in the exhaust aftermarket. Borla(r) offers a variety of options for the C6 and C6 Z06. Choose from several tip styles and muffler designs. Cat-Back(tm) and Axle-Backs are available with either the highly popular S-Type muffler or the Touring muffler. The S-Type has a more aggressive sound. For those who prefer it on the milder side we have the Touring muffler with a less aggressive sound. Some come with an assortment of tip designs. Borla(r) Performance Industries the original pioneers of premium high-quality T-304 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 Borla(r) street products carry an unsurpassed written Million-Mile warranty.