This Kooks Custom Headers R300-14 round muffler is made of high-quality polished stainless steel. It has a universal fit and comes with a single center inlet and outlet, with a diameter of 3 inches each. The overall length is 20 inches, while the body length, height, and width are 14, 4.5, and 4.5 inches, respectively. This muffler is reversible, and no additional parts are required for installation. It is suitable for race cars, and its grade type is performance. The muffler does not have a heat shield attached, and it is not tunable. It does not include a hanger, and the country of origin is China.