Installation kits are essential when upgrading your Ram 2500/3500 with new gears, they ensure your gears run flawlessly and reliably for the journey ahead. 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: 2003, 2004 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.