Freedom Performance Union 2-into-1 exhausts feature one piece 2 1/2" (64mm) outer diameter 16 gauge heavy duty heat shields that cover the headers for a full 220 degrees and a three-step header system with a race-inspired collector for optimal horsepower and torque. The 4" (102mm) diameter muffler features a 360 degree rotating end cap with a rolled edge and inside is a unique two-step baffle for an incredible roar and unmatched performance. Race systems have removable baffles and Quiet Baffles for these are separately available. All Union 2-into-1 exhausts are equipped with O2 sensor ports and come with plugs for use on models without O2 sensors. These exhausts come complete and ready to bolt on and include stainless steel hardware and brackets. Available with a perfect chrome or ceramic black finish.