2 1/2" ID CENTER INLET/ 2 1/2" OD CENTER OUTLET, 2.500" DIA CORES, 5 x 9 x 14" SHELL, 304 SS CHAMBERED TURBO MUFFLER Our turbo mufflers are constructed entirely of high quality, tig welded 304 stainless steel with stainless steel wool packing and come with a limited lifetime warranty. These mufflers will never "burn in", "blow out", or change their tone ever. The chambered turbo design of this muffler offers a deep civilized muscle car rumble at idle and cruising speeds, but they really come to life when you jump on the throttle. Our turbo chambered mufflers are great for a daily driver but are aggressive enough for your weekend racer. For maximum flow and a very aggressive sound we also offer a S-tube (straight through) turbo muffler.