Fabspeed's Valvetronic Exhaust System replaces the restrictive OEM side mufflers and center muffler for a deeper, throatier exhaust note along with improved power and throttle response. With valves open, unleash a bold roar from your 991. -Fits all Porsche 991 Carrera and Carrera S vehicles 2012+ -Saves 13 lbs. versus the factory components -Dramatic improvement in sports car sound and power throughout the RPM range -Constructed from high-quality 14-16 gauge C.N.C. mandrel-bent -T304L stainless steel for optimum flow and maximum durability -All included Fabspeed components are direct bolt-on replacements for the factory counterparts -Sport Headers feature C.N.C. mandrel-bent equal length primary pipes utilizing a 3-into-1 high velocity investment-cast pyramidal merge collector -Does not trigger a CEL and complies with most emissions regulations -Package includes Deluxe Quad-Style Tips, constructed from T304L stainless steel -All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty View all information and get yours here: http://www.fabspeed.com/porsche-991-carrera-valvetronic-exhaust-system/