The HKS Super Drager is designed for turbo charged and normally aspirated vehicles. The Super Drager was the first system of its style to incorporate a seamless shell. The Super Drager II Series is an evolution of the original Super Drager design. The Super Drager II uses a slim line muffler shell for added ground clearance. The Super Drager and Super Drager II increase low-end torque, improve mid range response and deliver high-end horsepower.