Corsa 2005-2007 Cadillac STS 4.6L 2.5in Axle-Back Dual Rear w Single 4in Black Pro-Series Tips

If you're looking to give your 2005-2007 Cadillac STS a more aggressive exhaust note and improved performance, this axle-back system from Corsa is a solid choice. It's designed specifically for the 4.6L engine, replacing the rear section of your factory exhaust to deliver a noticeable change in sound and flow. Corsa's patented Reflective Sound Cancellation (RSC) technology is a key feature here, engineered to eliminate that annoying exhaust drone you sometimes get at cruising speeds, so you can enjoy a more comfortable ride without sacrificing an aggressive sound when you step on the gas.

This system is constructed from 304 stainless steel, which is known for its strength and resistance to corrosion, meaning it's built to last. The dual-walled, 4-inch black PVD Pro-Series tips add a sharp, custom look to the rear of your STS. Installation is designed to be straightforward with a bolt-on process that requires no welding, and the system flows about 40 percent better than the stock setup, which can contribute to improved performance. It's also lighter than the original equipment, further helping with overall vehicle dynamics.

When you install this axle-back system, you're getting a complete package designed for your specific vehicle. It comes with detailed, full-color instructions, making the installation process as smooth as possible. The combination of improved flow, a custom-tuned aggressive sound under acceleration, and the elimination of drone at cruise speeds makes this a well-rounded upgrade for your Cadillac STS.