The ICON Vehicle Dynamics 2020-2022 Ford F-250 and F-350 Super Duty 2.5" coil springs are designed for drivers demanding the ultimate in performance and ride quality, while allowing for increased wheel travel (when used with ICON shocks) and the fitment of larger tires. The ICON Ford Super Duty coil springs provide 2.5" of lift height and feature a dual rate design. The dual rate design allows for a softer initial rate for superb on-road comfort and a firmer secondary rate that increases during compression for excellent bottoming resistance and off-road performance. Caster correction cams are also included to ensure proper caster angle with the new, taller ride height. Like all ICON coil springs, they feature a lifetime guarantee against sagging/breakage to produce confidence in knowing that you have the best suspension products available for the 2020-2022 Ford Super Duty. Features & Benefits 2.5" lift height Dual rate coil springs improve on and off-road ride quality over stock Dual-stage, semi-gloss powder coat offers excellent corrosion resistance Caster cam kit included for ideal caster angles with ride height increase 100% bolt-on system makes for an easy install Lifetime warranty against sagging/breakage Additional Attributes AAP_UDA_12: EA AAP_UDA_22: 1 AAP_UDA_4: 55 Add-On Part: 61111 - 17-25 FSD FRONT 2.5" EXTENDED SS BRAKE LINE KIT California Prop 65 Warning: Yes California Proposition 65: WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Finish: Powdercoated Front Spring Rate Type: Variable Front Spring Seat Included: No Grade Type: Performance Maximum Lift Height: 2.5 OEM Wheels & Tires Fitment: Yes Recommended Aftermarket Tires: 35" x 12.50" (Larger Tires May Fit but Fender Trimming and Modifications will be Required) Recommended Aftermarket Wheels: ICON Alloys - 18x9" w/ 5.25” Backspace / 6mm Offset Recommended Aftermarket Wheels: ICON Alloys - 20x9" w/ 5.25” Backspace / 6mm Offset Recommended Aftermarket Wheels: ICON Alloys - 17x8.5" w/ 5” Backspace / 6mm Offset Spring Color: Black Spring Material: Steel Title: ICON 2020-2022 Ford F-250/F-350 Super Duty 4WD Diesel, 2.5" Lift, Front, Dual Rate Coil Spring Kit