2007.5-2010 GM Duramax 6.6L LMM Driveline Upgrades

Whether you've added larger tires and want to win back some performance or you just need some improved traction for your custom diesel build, these 2007.5-2010 GM 6.6L Duramax LMM driveline upgrades are here to help. Front and rear ring-and-pinion gears get your GM 2500/3500 moving quicker off the line while an aftermarket differential provides serious traction to both wheels on a single axle. Add on a differential cover for more fluid capacity and easier maintenance without compromise. 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.