As you advance to higher level of tuning, silence and high power does not go together. HKS developed a muffler to solve this problem by switchable exhaust system. As the rpm goes up, it changes the flow of the exhaust.

Switchable Valve
             

• There are 2 paths for exhaust output.
• The valve is controlled by electric motor.
• The valve is controlled automatically (need to connect to the engine rpm sign).
• The valve is controlled by the speed and RPM.

Simple and Cool design



The tail material is titanium for the lightness and better sound. The surface work is hairline finish that looks smart.