The Large Bore HD Performance Cat-Back exhaust features 4" 409 stainless steel tubing with smooth curves and increased size to help remove restriction and keeps exhaust gasses flowing smoothly. The OE style band-clamps and bayonet style hangers make sure this system installs cleanly and easily. You will see increased performance and lower EGTs from this system. This system does not come with a tip.
Installation Instructions


This Part Fits:

Year	Make	Model	Submodel
2001-2005	Chevrolet	Silverado 2500 HD	Base
2001-2005	Chevrolet	Silverado 2500 HD	LS
2001-2005	Chevrolet	Silverado 2500 HD	LT
2004-2005	Chevrolet	Silverado 2500 HD	WT
2001-2005	Chevrolet	Silverado 3500	Base
2001-2005	Chevrolet	Silverado 3500	LS
2001-2005	Chevrolet	Silverado 3500	LT
2004	Chevrolet	Silverado 3500	WT
2002-2005	GMC	Sierra 2500 HD	Base
2001-2002	GMC	Sierra 2500 HD	SL
2001-2005	GMC	Sierra 2500 HD	SLE
2001-2005	GMC	Sierra 2500 HD	SLT
2003-2005	GMC	Sierra 2500 HD	WT
2002-2005	GMC	Sierra 3500	Base
2001-2002	GMC	Sierra 3500	SL
2001-2005	GMC	Sierra 3500	SLE
2001-2005	GMC	Sierra 3500	SLT
2004-2005	GMC	Sierra 3500	WT