- Performance Series Exhaust System
- 2001-04 GM 2500/3500 with FE9 RPO Code (Federal Emissions only, this product is not for California or Fleet emissions trucks)
- 6.6L Duramax Diesel
- Ext/Crew Cab (Classic) - Regular Cab requires adapter (sold separately)
- Aluminized Steel, No Muffler
- Down Pipe Back Kit
- 4'' Single Side Outlet