EXCEPT Grand Sport with Manual Transmission. This Axle-Back system includes both AFM and NPP valves. This system features the aggressive ATAK(r) sound and a durable high-temperature Ceramic Black finish on 4.25" intercooled T-304 stainless steel tips. Polished T-304 stainless steel tips are also available. Borla(r) Cat-Back(tm) & Axle-Back multi-core technology is designed to unleash hidden horsepower. Increased exhaust velocity adds power driving excitement fuel economy and the distinctive Borla(r) Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium T-304 stainless steel superior to T-400 series knockoffs (such as 409) to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Borla(r)'s C7 Corvette Axle-Back exhaust systems are covered under our Million-Mile Warranty for non-moving parts the exhaust valves are warrantied for 1 year. Failures of original equipment AFM and NPP actuators are not covered by the Borla(r) warrantyFeatures & Benefits System contains AFM and NPP valvesEXCEPT Grand Sport models with Manual TransmissionBorla products are constructed using T-304 stainless steel for long life and sharp appearance and feature all welded construction for maximum durability.Borla products are constructed using T-304 stainless steel for long life and sharp appearance and feature all welded construction for maximum durability.Additional Attributes Construction:All WeldedExhaust Type:Axle-Back SystemExit Position:Quad CenterGrade Type:PerformanceMaterial:T-304 Stainless SteelOff Road Use Only:NoProp 65 (C R or CR):CRProp 65 - Long Label:WARNING: This product in the physical form it is sold does not present a hazard. However operations including but not limited to welding brazing or thermal cutting can expose you to chemicals including Chromium Nickel Cobalt Arsenic Cadmium and Lead which are known to the State Of California to cause cancer birth defects and other reproductive harm. For more information go towww.P65Warnings.ca.govProp 65 - Short Label:WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.govProp 65 Warning Label:Proposition 65 Warning.JPGProp 65 Yes/No:YesTail Pipe Diameter:2.750 in.Tail Pipe Material:Stainless SteelTip / Outlet Finish:Ceramic Black On T-304 Stainless SteelTitle:2014-2019 Chevrolet Corvette Stingray C7 Axle-Back Exhaust System ATAKTubing Diameter:2.750 in.