Street-legal performance from Dynomax.

These Dynomax Ultra-Flo cat-back exhaust systems are designed to optimize the power potential of your vehicle. Features include aluminized or stainless steel mandrel-bent tubing for increased flow, steel or stainless steel Ultra-Flo muffler(s) with a straight-through design for the ultimate in performance and sound, OEM mounting and hanger locations, and all required hardware for a quick and easy installation. Plus, because the systems mount behind the catalytic converter, your vehicle will remain 50-state emissions legal!

DynoMax Hummer H3 w/3.5L; T-304 Stainless Steel Exhaust System
$519.99