The VT from DynoMax is a high-flow muffler uses a special calibrated internal valve to reduce drone without sacrificing performance. It's made from 100 percent welded stainless steel, available in a side inlet/center outlet 14- or 16-inch body length, with inlet/outlet bushing diameters that include 2-1/4-, 2-1/2-, and three-inch sizes.

SOURCE
Dynomax Performance Exhaust
Monroe
MI
734-384-7806
http://www.dynomax.com