Replace your GM's worn-out rear shocks with our high-performance 3-4" rear shocks! Over time, existing shocks can wear down, resulting in a harsh ride, vibrations, and excessive body roll. Built with durable construction and precision design, our rear shocks are made to last while providing excellent dampening performance. Whether you're towing, hauling a heavy load, or simply seeking top performance, our rear shocks offer enhanced control and stability for your truck’s rear end. Pair your new set of rear shocks with our selection of 3-4" Front Shocks. GM Duramax Fitments: 2006, 2007 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.