Constructed of 304 stainless steel for long lasting strength and durability. Designed for exhaust gasses to travel straight through the heat resistant perforated core for a remarkable tone. Universal muffler fits 3" stainless steel tubing. See below for specifications. Configuration: 3" in/out center/center, 5" round x 14" body x 19" Overall Length. Features an aFe POWER logo stamped onto the muffler for quality, brand authenticity.