The ICON 2.5-3” coilover conversion suspension system is a great way to lift your 4WD 2011-2016 Ford F-250/F-350 Super Duty while improving ride quality and performance. This upgraded Stage 4 system is great for towing, rough construction site terrains, and country dirt roads all while keeping a smooth highway feel. Also included in this stage is ICON's CDC Valve front and rear shocks, for those desiring an easy way to tune the ride externally with 10 settings, from soft to hard. ICON's Stage 4 System is comprised of 2.5 Series CDCV remote reservoir coilovers that are adjustable from 2.5-3” of front lift over stock, adjustable front track bar with massive FK rod end, dual steering stabilizer kit with ICON 2.0 Aluminum Series stabilizers, alignment cams for adding caster, rear leaf spring expansion packs with blocks and U-bolts for a more compliant ride and reduced axle wrap, and ICON 2.5 Aluminum Series CDCV piggyback reservoir rear shocks. ICON 2.5 Series remote and piggyback reservoirs ensure optimum performance by increasing the duration of consistent damping regardless of situation, keeping the shocks at a cooler operating temperature during heavy use. 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.