Stainless Steel Construction Product Type - Rear Section Exhaust Pipe Diameter - 2.75" into muffler dual 2" out Tip Size - 4.25" Tip Description - Dual Round Rolled Angle-Cut Intercooled Tip # - 19 Exit - Quad Center Rear Exit QUICK FACTS Dyno Tuned For Maximum Performance Proven Borla Technology Lifetime Limited Warranty Fits: 2015 Corvette ZO6 6.2L AT/MT Rear Wheel Drive 2dr. This is louder than the "S-Type". C7 Corvette Z06 Exhaust - Borla ATAK Axle-Back w/out NPP : Quad 4.25" Round Tips w/out NPP dual mode exhaust. BORLA®'s C7 Corvette rear section exhaust systems are covered under our Million-Mile Warranty for non-moving parts, the exhaust valves and actuators are warrantied for 3 years.