2007.5-2010 GM Duramax 6.6L LMM Pistons & Rings

One of the best things you can do when looking to upgrade and modify your 2007.5-2010 GM 6.6L Duramax is replacing the weak OEM pistons and rings. Aftermarket pistons for modified diesel engines typically feature a higher compression ratio over stock to improve the overall thermal efficiency of the engine. This allows the engine to produce more power while reducing exhaust gas temperatures along the way. Here at Alligator Performance, we only carry premium upgrades to help unlock the full potential out of your Sierra/Silverado 2500/3500. 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.