The Whiteline Coil Spring is a direct-fit replacement for BMW 3 Series and BMW X3 models built from 2017 to 2024. Springs are supplied as a matched pair so ride height stays even side to side. Free height gives approximately 30mm of lift over a standard, unladen vehicle. Fitting raised springs may require longer brake lines, extended bump stops and a wheel alignment. Spring rate is approximately 36 N/mm, chosen to carry a constant load without harshness when empty. This part is a common wear item on high-kilometre Australian vehicles and is worth replacing in pairs. We recommend fitting by a qualified technician and following the manufacturer's torque specifications. Check the fitment list against your build date and VIN before ordering, as running changes were made mid-generation. New stock, 24 Months warranty, and dispatched from our Australian warehouse.