2001-2004 GM Duramax 6.6L LB7 Exhaust Kits

While the stock 2001-2004 GM 6.6L Duramax LB7 certainly doesn't sport a weak sounding exhaust system, it doesn't do you or your truck any favors. These premium street-legal and off-road aftermarket exhaust systems feature much more efficient designs over your restrictive factory exhaust, allowing your engine to breathe easier and growl louder. On top of their impressive power gains, these premium aftermarket exhaust kits provide an aggressive tone that will be sure to get the blood flowing each time you hop on the accelerator. We offer everything from single-exit kits, dual-exit kits, up-pipes, downpipes, and universal exhaust tips to get your entire exhaust system looking and performing the way you want it to! GM Duramax Fitments: 2001, 2002, 2003, 2004 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.