The ICON 2.5” suspension system is a great way to level your 4WD 2005-2016 Ford F250/350 Super Duty while improving ride quality and performance. This Stage 5 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 to back for those desiring an easy way to tune the ride externally with 10 settings from soft to hard. ICON's Stage 5 System is comprised of dual rate coil springs, alignment cams for adding caster, adjustable track bar w/ bearing, dual steering stabilizer kit with ICON 2.0 Aluminum Series stabilizers, and ICON 2.5 Aluminum Series remote reservoir shocks front and rear w/ CDCV. ICON 2.5" reservoir shocks 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. This Stage 6 system sees the inclusion of the ICON Vehicle Dynamics Ford Super Duty Radius Arm System that feature a sealed pivot bushing that minimizes road feedback and ensures a long life and quiet operation. Their on vehicle caster adjustment allows for proper caster while eliminating the need for caster bushings or drop brackets. Additionally, their fabricated, fully boxed design ensures strength and utilizes a profile optimized for tire clearance at full steering lock, making a 37” tall tire clear without coming in contact with the radius arm.