HKS 2 Stage Muffler System 45th Limited Edition - Toyota GT86 / Subaru BRZ

Valve switchable exhaust system "silence" and "high power" are implemented together.

While the valve is opened, a straight designed 85mm pipe withstands 450ps. Low exhaust pressure design. (A special designed φ65 valve is used on both sides.)

While the valve is closed, the long exhaust pipe inside the silencer eliminates uncomfortable low exhaust resonance. The exhaust sound level while street driving (low speed) is as low as the stock.