Description
If you’re running a 2001-04 GM 2500/3500 HD, upgrading to a quality cat-back exhaust system is one of the most impactful bolt-on modifications you can make. The American Thunder system delivers improved flow characteristics that reduce backpressure, freeing up horsepower while providing a refined, aggressive tone. This complete kit handles the transition from your catalytic converter to the rear bumper—no fabrication required.
- Cat-back design
- 3.5-inch tailpipe
- 4-inch polished tip
- Aluminized steel construction
- Bolt-on installation
- Complete system kit
- GM 2500/3500 HD 2001-2004
- American Thunder brand
