All HKS exhaust systems are engineered for high-performance and durability. Each bolt-on system features high-quality mandrel bent, bake-coated aluminized steel piping and application specific muffler assemblies to maximize horsepower and torque gains. The Hiper exhaust for the 300ZX TT has dual(65mm) piping and round single (120mm) tipped stainless steel mufflers on each side.
