Ironman 4x4 Leaf Spring Set to suit Nissan Navara models built from 2019 to 2020, supplied ready to fit with no modification required. Spring rate is approximately 32 N/mm, chosen to carry a constant load without harshness when empty. Free height gives approximately 50mm of lift over a standard, unladen vehicle. Fitting raised springs may require longer brake lines, extended bump stops and a wheel alignment. Springs are supplied as a matched pair so ride height stays even side to side. Fitting is a straightforward workshop job and no coding or calibration is needed. This part is a common wear item on high-kilometre Australian vehicles and is worth replacing in pairs. Every unit is supplied new with a 12 Months warranty against manufacturing defect.