Gibson 08-10 Hummer H3 Alpha 5.3L 2.5in Cat-Back Dual Split Exhaust - Stainless

You're looking to give your 2008-2010 Hummer H3 Alpha a more aggressive sound and a custom look, and this Gibson dual split cat-back exhaust system is a solid way to do it. This kit replaces your factory exhaust from the catalytic converter back, featuring 2.5-inch mandrel-bent stainless steel tubing that splits into two polished stainless steel slash-cut tips exiting straight out the back. It’s designed to bolt right up, using factory-style hangers, so you won't need to do any welding for the installation.

Inside the system, you'll find a Superflow™ muffler that’s baffled and chambered. This design helps reduce backpressure compared to the stock setup, which can lead to improved torque and horsepower. Gibson states typical gains of 15-20 horsepower with this system. While it’s tuned for a more aggressive, throaty sound, especially noticeable under load like when towing, the baffling is intended to minimize interior drone, keeping your cabin more comfortable on longer drives. The polished stainless tips are built to last and complement the rear exit style, working with most bumpers, roll pans, and trailer hitches.

This Gibson exhaust system comes with all the necessary hardware for installation, making it a straightforward bolt-on upgrade. It’s constructed from durable stainless steel tubing and polished stainless tips, and Gibson backs it with a Lifetime Limited Warranty, so you can be confident in its longevity.