2.50 CENTER INLET / 2.50 CENTER OUTLET - AGGRESSIVE SOUND;Produces an Aggressive sound; 1-Chamber Internal Design Cancels out Annoying High Pitch Frequencies; Increases Exhaust Flow for Increased Performance and Excellent Throttle Response; Constructed of Durable 16-gauge Aluminized Steel; 100% MIG Welded for Maximum Strength and Durability; Silver Painted Finish; Compact Design Accommodates Most Cars/Trucks/SUV's;