Inspired and designed from endurance and GT racing in Japan, HKS developed its Hi-Power Exhaust system for the 08-10 Evolution X to produce looks and performance. HKS has incorporated their race inspired, offset muffler and piping design into the Evo X Hi-Power. This offers greater flow and higher-RPM power gains due to the less restrictive design. The Evolution High-Power HKS exhaust’s large and smooth exhaust flow allows greater exhaust velocity for better mid-range boost response and high-RPM power. The Evolution X Hi-Power exhaust systems consist of 75mm diameter stainless steel piping, muffler and 115mm tip assemblies. All necessary gaskets and hardware are included.