The Dynatech PowerCAT catalytic convertor uses the latest technology in catalytic convertor design. Utilizing a Premium Metallic Substrate internal design, the flow is superior over a factory style convertor. These convertors have shown to flow 54% better than a stock O.E. design. Featuring a 4.00” O.D., 100% Stainless Steel shell and a quicker light off due to higher thermal conductivity, it’s easy to see why the PowerCAT will last as well as it performs. The smaller design requires much less space and weighs considerably less. Available for 2.50” and 3.00” exhaust systems. Each end is made to slip over the intended size.