HKS Hi Power

All HKS exhaust systems are engineered with performance, quality, and value as primary goals. Through countless comprehensive efforts of flow analysis, dyno testing and tuning are we able to maximize horsepower gains throughout a board powerband, while maintaining reasonable sound levels for street use. HKS Exhaust Systems that are designated for street use retain all factory emissions equipment and conform to the California Vehicle Code 95-decibel exhaust noise level limit. (Note: Some HKS exhaust systems are designated for Off-Road Use Only and are solely to be used for Off-Road purposes)

Inspired 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-PRM power gains due to the less restrictive design. This is achieved by eliminating unnecessary bends for the straightest exhaust path.

For turbocharged applications, the large and smooth exhaust flow allows greater exhaust velocity for better mid-range boost response and high-RPM power. Naturally aspirated vehicles also benefit from greater exhaust flow capacity as engine tuning levels increase. Certain applications are available in a Silent Hi-Power version which has an inner silencer built into the muffler. Like Drager Exhaust systems, Hi-Power Exhaust systems are made from SUS304 stainless steel muffler and tip assemblies. Depending on the application, Hi-Power muffler tips are 96mm, 115mm and 120mm in diameter, piping diameter ranges from 55mm to 95mm. Special Edition HKS Carbon Titanium Hi-Power Exhaust systems are exclusively available for certain popular applications. These exclusive versions of the Hi-Power Exhaust consist of a carbon fiber wrapped muffler shell, titanium tip, and polished SUS304 stainless steel piping.

	Advantex®: HKS uses Advantex®  glass fiber packing in most of its newer model applications. Advantex is a continuous strand of fiberglass packing that is less likely to blow out or wear out over time compared the conventional muffler packaging material. Advantex is also part of how HKS makes its distinct exhaust tone. * Advantex® is a registered trademark of Owens Corning.
	Stainless Wool: The stainless wool insulates the glass wool from extreme heat and also prevents it from breaking apart. The stainless wool also provides excellent durability and sound dampening.