GHL's T-304 Stainless Steel Cat Back Exhaust System for the Hummer H3 is a direct bolt on replacement.  Featuring a CNC produced flange for exact fitment to the stock down pipe and mandrel bent stainless steel piping that utilizes factory mounting locations for easy installation. The dual outlet muffler has 4" double wall tips providing a sophisticated throaty exhaust note while maintaining quiet interior cabin levels at cruising speed for the passengers. Step on the throttle and you'll know you have something special.