HKS Carbon-Ti Exhaust 2002-2007 Subaru WRX / 2004-2007 STiInspired and designed from endurance and GT racing in Japan, HKS developed its Hi Power Exhaust system for both turbocharged and naturally aspirated applications. HKS has incorporated this new race inspired offset muffler and piping design into many street applications, which offers a greater flow and higher RPM power gains due to the less restrictive design. This is achieved by eliminating unnecessary bends for the straightest exhaust path. For