Stainless Works 2.5in ID OFFSET INLET/ 2.5in OD CENTER OUTLET 4inX8inTurbo S tube muffler, Made from 304 stainless steel for maximum corrosion resistance. This muffler has 2 1 2" ID offset inlet and a 2 1 2" OD center outlet with a 2 1 2" core and shell size 4" x 8" x 14" with an overall length of 18" with a mill finish. Stainless Works is the only manufacturer to make the body, core, and packing out of 304 stainless steel. Exclusive louvered core creates a sweet "Street Rod" deep tone that is very aggressive. These