Chrome 17" Shorty Reverse Cone Megaphone Muffler Color/Finish: Chrome Simple bolt-on installation Dimensions: 17.5" Long, Outlet OD 3-3/4" tapers down to 2-1/8", Inlet OD 1 5/6" x 1 3/4" ID Sold individually; Includes mounting bracket, clamp, and reducer kit Fits 1 3/4", 1 5/8", 1 1/2", and 1 3/8" exhaust pipes