The Gibson MWA Series Mufflers are the newest line of mufflers offered by Gibson Performance. The MWA in Gibson MWA Series Mufflers stands for "Mufflers With Attitude." These unique straight-thru designed mufflers are engineered to promote the highest exhaust flow possible for a muffler, being only 3cfm less the a 3 inch straight pipe. Gibson MWA Series Mufflers feature no packing, baffles or weak deflectors, maintaining a lightweight design with a unique sound. Gibson MWA Series Mufflers are made high quality stainless steel, providing a long service life and maximum durability.