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
2006	Chevrolet	Silverado 2500 HD	LS
2006-2007	Chevrolet	Silverado 2500 HD	LT
2007	Chevrolet	Silverado 2500 HD	LTZ
2006-2007	Chevrolet	Silverado 2500 HD	WT
2007	Chevrolet	Silverado 2500 HD Classic	LS
2007	Chevrolet	Silverado 2500 HD Classic	LT
2007	Chevrolet	Silverado 2500 HD Classic	WT
2006	Chevrolet	Silverado 3500	LS
2006	Chevrolet	Silverado 3500	LT
2006	Chevrolet	Silverado 3500	WT
2007	Chevrolet	Silverado 3500 Classic	LS
2007	Chevrolet	Silverado 3500 Classic	LT
2007	Chevrolet	Silverado 3500 Classic	WT
2007	Chevrolet	Silverado 3500 HD	LT
2007	Chevrolet	Silverado 3500 HD	LTZ
2007	Chevrolet	Silverado 3500 HD	WT
2006	GMC	Sierra 2500 HD	SL
2006-2007	GMC	Sierra 2500 HD	SLE
2006-2007	GMC	Sierra 2500 HD	SLT
2006-2007	GMC	Sierra 2500 HD	WT
2007	GMC	Sierra 2500 HD Classic	SL
2007	GMC	Sierra 2500 HD Classic	SLE
2007	GMC	Sierra 2500 HD Classic	SLT
2007	GMC	Sierra 2500 HD Classic	WT
2006	GMC	Sierra 3500	SL
2006	GMC	Sierra 3500	SLE
2006	GMC	Sierra 3500	SLT
2006	GMC	Sierra 3500	WT
2007	GMC	Sierra 3500 Classic	SL
2007	GMC	Sierra 3500 Classic	SLE
2007	GMC	Sierra 3500 Classic	SLT
2007	GMC	Sierra 3500 Classic	WT
2007	GMC	Sierra 3500 HD	SLE
2007	GMC	Sierra 3500 HD	SLT
2007	GMC	Sierra 3500 HD	WT