The Magnaflow exhaust system for the H2 Hummer features dual rear exit, 5"x11"x22" polished stainless steel muffler, 3"/2.5" stainless steel tubing, and 3"x3.5" rectangle polished stainless steel tips. The straight through design offers increased air flow with a smooth, deep tone. The Magnaflow exhaust system for the H2 Hummer is a bolt-on installation and comes with a lifetime warranty.