A straight - through design, the AWE Touring Edition Axleback is a 3 T304L stainless steel configuration featuring AWEs proprietary, drone - canceling solution, 180 Technology. With aggression on - tap, the Touring Edition provides the ultimate experience for drivers wanting the ability to unleash the fury of the 6.2L while providing drone - free in - cabin acoustics at cruising speeds. Responsive to throttle input, the 180 Technology - equipped Touring Edition is capable of remaining tame until provoked by the driver. The Touring Edition Axleback comes complete with over - axle tubes, rear 180 Technology resonators, quad 4.5 double - walled tips in chrome silver or diamond black, and all necessary hardware for installation. AWE AFM Valve Simulators (included) are required for vehicles equipped with AFM valves i.e. Corvette Stingray Z51 Auto Z51 Manual (2014 - 2016) Grand Sport Auto. All tip options include the AWE logo and double - walling to ensure a mirror finish even under hard usage. All tips are individually adjustable, allowing depth into the bumper to be set according to personal taste.