ICON Triple Rate rear coil springs for 2022-2025 Tundra provides a modest increase in ground clearance while greatly enhancing on- and off-road performance, especially when used with ICON shocks and suspension components. The triple-rate coil design provides a softer droop and ride rates with a firmer overload rate that combine to deliver on-road comfort with excellent bottoming resistance and superior off-road performance. Specifically designed to net .5" of rear lift on a non-TRD Tundra or 0" of rear lift on a Tundra equipped with a TRD suspension Package desiring improved performance, but OE 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 vehicle.