The Agency Power RX-8 exhaust features a dual muffler setup with 4" titanium tips. The system uses T304 stainless steel piping throughout with high quality thick flanges to resist warping. The Agency Power RX-8 exhaust includes the cat delete pipe for those seeking more sound and power. The midpipe is resonated to smooth out the tone and has a bung for the stock O2 sensor. This system includes all the necessary hardware and gaskets for bolt-on installation to your factory exhaust manifold.