Value-priced BORLA? ProXS mufflers share many of the hottest features of our performanceline. Including high-quality 300 Series austenitic stainless steel construction, streetcommandingsound and our Million Mile Warranty. Sizes are available for import anddomestic cars and trucks. Borla Pro XS Muffler; Center/Offset; 2.5 in. Center Inlet; 2.5 in. Offset Outlet; 19 in. x 4 in. x 9.5 in. Oval Body; 24 in. OAL; Unnotched; T-304 Stainless Steel;. Million Mile Warranty ProXS? Muffler 2.5" Offset Inlet/ 2.5" Center Outlet, 4" x 9.5" Oval, 19" Long Body, 24" Overall Length. Universal Part. Reversible Design.