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The Gibson single-exit cat-back exhaust for 2003–2006 Hummer H2 (6.0L) delivers a straight-back exit with a polished stainless tip and aluminized mandrel-bent tubing. It provides a bolt-on installation with factory-style hangers and a baffled/chambered muffler to minimize interior drone. Expect modest gains—typically 5–10 horsepower—and coverage under Gibson's Lifetime Limited Warranty.
Gibson 03-06 Hummer H2 Base 6.0L 3in Cat-Back Single Exhaust - Aluminized
