Don't settle for worn-out shocks for your GM 2500HD/3500HD, upgrade to our selection of high performing 7-8" Rear Shocks! Your existing shocks wear down overtime which leads to a harsh and bouncy ride, vibrations and excessive body roll. Our selection of shocks is built sturdy using precision design and built to last and deliver excellent dampening performance. Whether you're towing, hauling heavy loads, off-roading or you just want the best performance, our rear shocks deliver enhanced control and stability to your lifted rear end. Pair your new set of rear shocks with our selection of 7-8" Front Shocks! 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.