Built to original equipment form, fit and function, the Ironman 4x4 Leaf Spring Set covers Isuzu D-Max models built from 2018 to 2020. Wire is cold-wound from Spring Steel then shot peened and powder coated for corrosion resistance. Fitting raised springs may require longer brake lines, extended bump stops and a wheel alignment. Free height gives approximately 40mm of lift over a standard, unladen vehicle. Springs are supplied as a matched pair so ride height stays even side to side. Spring rate is approximately 48 N/mm, chosen to carry a constant load without harshness when empty. New stock, 24 Months warranty, and dispatched from our Australian warehouse.