Genuine Toyota Parts PTR31-35130 TRD Performance Exhaust System Stainless steel, cat-back exhaust design with TRD-logo-etched tip Allows for a less restrictive path, helping reduce backpressure for added low- to mid-range torque, along with improved horsepower (between 5 to 8 wheel horsepower, depending upon application) Produces a deep, throaty tone while meeting the legal 95-decibel noise limit, as required by law Superior corrosion resistance