Heavy-duty control arms and ball joints can make a significant difference in achieving excellent ride quality compared to a wandering, rough-riding truck. Our selection of control arms is ideal for those seeking improved ride quality and control, especially after lifting their vehicle. Control arms help maintain your truck's geometry, which results in better handling and tighter steering. Ball joints are often a weak point for the GM 2500HD/3500HD, wearing out quickly, particularly for those using larger wheels and tires. Our heavy-duty ball joints are the perfect upgrade for your worn factory components. Check out our selection ofSteering Components! 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.