The ICON Radius Arm Drop Kit for the 2011 - 2016 Ford F - 250F - 350 Super Duty 4WD allows the use of the stock or aftermarket radius arms with ICON 4.5 - 7 lift suspension systems. This kit consists of fabricated radius arm drop brackets, CNC laser cut and brake - formed from steel plate and engineered to withstand the stresses of aggressive off - road driving. The drop brackets look as great as they perform with a durable semi - gloss black powder coat finish. Wheel with confidence knowing that the brackets are covered by ICON's Limited Lifetime Warranty.