5" Aluminized Downpipe Back # S6020AL

Fits 2001-2007 GM Classic Duramax. 5" Down Pipe Back, Off-Road (incl. front pipe), Single Side exit. Off-road kit, eliminates catalytic converter. KEY FEATURES: * Rich, mellow exhaust note * Installs with common hand tools * Can improve fuel economy by 1-2 mpg * Boosts torque and horsepower * Maximum EGT reduction