ICON's 2014-UP Ram 2500 4WD 2.5” Stage 4 Suspension System is made up of dual rate front coil springs, necessary bracketry and hardware, front adjustable track bar, as well as 2.5 Aluminum Series reservoir front and rear shocks with CDCV. This system improves ride quality and performance both on and off-road. The ICON stage 4 system is great for towing, rough construction site terrain, and country dirt roads all while keeping a smooth highway feel. ICON 2.5" reservoir shocks with CDCV ensure optimum performance by increasing the duration of consistent damping regardless of situation, keeping the shocks at a cooler operating temperature during heavy use. The ICON CDC Valve upgrade is included in this stage for those desiring an easy way to tune the ride externally. An adjustable track bar with FK bearings is used to not only improve rigidity over the flexible factory joints, but offer adjustability to center the front axle under the truck. With the endless hours ICON has spent testing and tuning our suspension components and shocks as a complete package, you can rest assured you have the best suspension solution on the market. After a thorough inspection of the Ram’s air ride assembly, ICON developed components that properly locate the airbags and associated parts so they are not over-traveled and damaged. This air ride-specific system allows for full functionality of factory air ride modes. Use of optional ICON 2" Air Ride Kit (Part #214212) allows for end-user adjustability of rear ride height from stock to 2" over stock.