2003-2012 Ram 2500/3500 2.5" Stage 4 Suspension System is our ultimate performance kit that offers extraordinary diversity across any terrain. This system not only levels out the stance, it increases ride quality and performance substantially both on and off-road. The Stage 4 System is comprised of dual rate coil springs, polyurethane bump stops, sway bar drop brackets, 2.5" V.S. Aluminum Series shocks, bearing style adjustable track bar, and tubular steel upper & lower links. ICON 2.5" Aluminum Series shocks extend the performance of the kit by increasing the duration of consistent damping regardless of situation. These shocks include FK bearings, billet top cap & rod ends, and 7/8" shafts for strength. The adjustable track bar with bearings not only improves rigidity over the flexible factory joints, but offers adjustability to center the front axle under the truck. ICON steel upper & lower links increase performance, strength, and range of alignment. These link arms decrease the bind found in the factory link bushings. ICON has spent endless hours testing and tuning our suspension components and shocks together, so you can rest assured you have the best suspension solution on the market.