Polished-stainless, 4-inch rolled-edge, air-cooled tailpipe tip. Key Features: 3 inch mandrel bent Stainless Steel construction Straight-thru polished-stainless Monster muffler 3 inch constant-diameter Monster Y-pipe Dramatically improves flow up to 104% 4 inch polished Cerakote BLACK Tip Cuts backpressure up to 93% Lowers exhaust gas temps Maximum Airflow