Complete system: headers, collector/muffler, pan-e-vac tubes, stainless steel Stage 8 self-locking bolts, and gaskets. Racers agree: Its so much quieter! BORLA is the choice of major vehicle manufacturers for their performance and racing programs. BORLA has sold more stainless steel exhaust upgrades than any other manufacturer. Just what you would expect from the original pioneer and leader of the performance aftermarket exhaust industry. BORLA gives you more power and torque, improved fuel economy, longer engine life, fine motorsport styling, a precision fit, and the distinctive BORLA sound of power recognized by motoring enthusiasts around the world. WRX/LEGACY 01-14/WRX STI 04-18; 2.0L/2.5L TURBO MT AWD SDN/WGN HEADER 1.625in. PRIMARY; 2.25in. COLLECTOR. Million Mile Warranty 2002-2014 Subaru Impreza WRX 2.0L/ 2.5L 4 Cyl. Turbo All Wheel Drive (AWD) Automatic/ Manual Transmission 4-Door/ Wagon/ 2004-2018 Subaru Impreza WRX STi 2.5L 4 Cyl. Turbo All Wheel Drive Automatic/ Manual Transmission 4-Door Sedan/ Hatch/ 2001-2014 Subar