Corsa's Cadillac CT4-V Blackwing axle-back exhaust will give your Blackwing the sound it deserves! The system integrates flawlessly with the stock Cadillac Active Exhaust valve assembly giving the driver full control over the driving experience. Simply choose the driving mode you prefer and Corsa's exhaust system responds by quieting down or unleashing the exhaust system. Featuring Corsa's No Drone RSC(R) Technology this system has been custom tuned for the Cadillac 3.6 LF4 engine creating the perfect tone for this car. The cat-back system features Corsa's 3.0 in. double X-pipe which elminates the stock crushed piping near the rear axles helping to increase flow and performance. Corsa cat-back exhaust systems are engineered and manufactured in the USA and are backed by a Limited Lifetime Warranty