For installing a set of ring-and-pinion gears in your 2004.5-2007 Ram 2500/3500, having the proper hardware is essential. Our gear install kits include all the required components such as shims, bearings, crush sleeves, and more, ensuring a complete overhaul of your Ram's front and rear ends while upgrading to more aggressive gearing. Check out our excellent selection of Gear Packages. Ram Cummins Fitments: 2004, 2005, 2006, 2007 Ram 5.9L Cummins.Submodel Fitments: Tradesman, Laramie, Laramie Longhorn, Big Horn, Limited, Lone Star, Power Wagon.Some exceptions apply, please see individual product pages for specific fitments.