2007.5-2010 GM Duramax 6.6L LMM Exhaust Brakes

Greatly improve the stopping power of your 2007.5-2010 GM 6.6L Duramax LMM with any of the premium exhaust brakes we offer here at Alligator Performance. Exhaust brakes work by trapping engine pressure in the exhaust system, which in turn forces the engine to create back-pressure, causing your engine to slow itself down quicker in every situation. This allows your factory braking system to last up to 3 times longer which improves the overall longevity of your Sierra or Silverado. GM Duramax Fitments: 2007, 2009, 2010 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.