Gibson Exhaust introduces a new performance cat-back exhaust system to maximize your full powerr potential on the Hummer H3 with a powerful exhaust sound. Each system bolts behind the catalytic converter and is configured with a 3.00 inch mandrel bent head pipe, 3.00 inch mandrel bent single tailpipe, a Superflow CFT performance Muffler featuring a Chambered and louvered design for better volume efficiency. NO packing to blow out or baffles to break. The exhaust is completed with a large 4inch mirror bright polished T-304 Stainless Steel exhaust tip, with our "clampless" design feature exiting near stock location. Includes zinc plated factory style hangers, clamps and all hardware. Available in high quality Aluminized or stainless steel. Designed for hassle free installation with professional looking results. Gibson exhausts are proudly manufactured in the USA and backed by a lifetime warranty.