2011 6.6L LML GM Duramax Exhaust Kits
Your new 6.6L LML GM Duramax came from the factory with a 3.5" exhaust. So why, you ask, should you even be thinking about changing it? Factory exhausts are typically not mandrel bent which means not only do they not take the most effective route but they can also vary in diameter throughout the length of the exhaust. Aftermarket DPF back exhaust kits for the LMM's feature smooth radius bends that help to increase fuel economy and lower EGT's (exhaust gas temperatures). They also, typically, do away with the factory muffler. We carry dual and single DPF back exhaust kits in 4" and 5" from Diamond Eye, MBRP, Magnaflow and Silverline. If you are after a more agressive look, we offer single and dual stack kits from BD Diesel and Grand Rock. If you are taking a more off-road approach to driving your diesel we offer DPF delete kits which can be found under the Off-Road Performance Products category.
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