This Corsa 2.5" Axle-Back with a dual rear exit is designed for an aggressive sound under acceleration and a drone-free experience during cruise. This axle-back exhaust system is constructed from premium stainless steel to deliver lasting performance, sound and appearance. The Sport Series Axle-Back Exhaust gives you high performance sound that has a growl at idle and is robust under acceleration. Product Features +14 horsepower gain 40% flow increase over stock +16 torque gain Product Benefits Easy bolt-on installation, no welding needed All hardware and detailed instructions included Limited lifetime warranty