Borla 14-18 C7 Corvette Stingray Axle-Back ATAK Exhaust 2.75in To Muffler Dual 2.0in Out 4.25in TipThis system does NOT include AFM or NPP valves. It is intended for vehicles that are either NOT equipped with AFM and NPP or have the AFM and NPP disabled. System has non functioning mounts where AFM actuators can be mounted if the vehicle had them. A Check Engine Light will occur on vehicles equipped with AFM. This system features the aggressive ATAK(r) sound and a durable high temperature ceramic matte black finish on 4. 25" T 304 stainless steel