PRO ONE DESIGN 2.5"/ 3.5" LINEAR RATE LIFT COIL SPRINGS FOR 17-26 FORD F250 / F350 / F450 4WD

2.5" of Lift on 17-19 F-250 / F-350 / F-450 4WD

3.5" of Lift on 20-26 F-250 / F-350 / F-450 4WD

2.5" vs 3.5" Difference

Pro One Design Springs—And Comparable Options From Other Manufacturers—Are Commonly Labeled As 2.5" Or 3.5" Depending On Ford Super Duty Model Year. This Difference Is Based On Factory Ride Height, Not A Change In The Spring Design.

Starting In 2020, Ford Lowered The Factory Ride Height On Super Duty Trucks By Approximately 1" Compared To 2005–2019 Models. Because Of This, The Same “2.5 Inch” Leveling Coil Will Produce Roughly 2.5" Of Lift On A 2005–2019 Truck, But About 3.5" Of Lift On A 2020+ Truck.

The Spring Itself Has Not Changed—The Variation Comes Entirely From The Newer Trucks Starting At A Lower Factory Stance.

These Springs Are Also Engineered With A Soft, Linear Spring Rate To Deliver A Smoother Ride, Improved Compliance, And Consistent, Predictable Handling Both On-Road And Off-Road.

The Exception Is The 2020+ Super Duty Tremor. These Trucks Come With An Approximate 2" Factory Lift, Making Them About 1" Taller Than A Standard 2005–2019 Super Duty. On Tremor Models, Our 2.5"/3.5" Spring Provides Approximately 1.5" Of Additional Front Lift.