Fits all Porsche 996 Carrera vehicles 1998-2004 Increase horsepower and torque by 12 whp and 10 ft-lbs Saves 11 lbs versus the factory components Includes Fabspeed's Deluxe Quad-Style Tips in Polished or Black Chrome finish; also compatible with OEM tips Improves sports car sound and power throughout the RPM range Constructed from high-quality 14-16ga CNC mandrel-bent T304L stainless steel for optimum flow and maximum durability Direct bolt-on replacements for the restrictive factory mufflers All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty NOTE: Carrera C4S models must re-use OEM tips.