The Predator 4" Performance KORE Exhaust System is a full, high performance exhaust system that replaces the restrictive stock muffler and tail pipe. The system is constructed from tough stainless steel and Ceramic Coated in black for the ultimate in Performance, Durability and Heat Insulation. The Black Ceramic Coating retains heat in the exhaust system reducing radiant and under hood temperatures as well as a slight increase in performance over our non coated exhaust. Performance is greatly increased when accompanied with our off-road pipe. Lifetime Warranty. Designed for 1996 and 2004 Hummers.