BORLA TRANSVERSE FLOW UNIVERSAL MUFFLER, STAINLESS STEEL, NATURAL FINISH, SOLD INDIVIDUALLY -- 2.5 in. inlet and outlet diameter; Single offset inlet and dual outlet configuration; 5.5 in. thick x 10.25 in. wide, 19 in. case length; Oval casing; Made from aircraft-quality, 100 percent T-304 austenitic and sound-absorbing mandrel-bent stainless steel; Fully-welded; Features a patented design that increases exhaust flow for more power.