| 2.5 Inlet & Outlet x 18 in. Bottle Style Resonator Universal standard style round exhaust resonator (1793) by . Muffler inlet diameter: 2.5 . Muffler outlet diameter: 2.5 . Muffler body length: 18 . Muffler sound: aggressive / loud. ultra quiet resonators are constructed from t304 stainless steel and... more | | $112.82 $107.63 FREE shipping go to store |