General description maXpeedingrods' B1 series Coilovers Suspension Kit is designed for BMW E36 3 Series Convertible models from 1993 to 1999, including 318i and 320i. This kit is perfect for those looking to replace old, worn-out struts while enhancing handling performance. The damping is factory preset, and the height is adjustable to maintain original equipment (OE) ride quality as much as possible. Technical specifications Front lowering: 30mm-90mm Rear lowering: 30mm-70mm Damping: preset damping Top mounts: OE top mounts required for front and rear Spring rate Front: 8 kg/mm (448 lbs/in) Spring rate Rear: 10 kg/mm (560 lbs/in) Spring length Front: 170 mm Spring length Rear: 190 mm Help spring rate Front: 1 kg/mm (56 lbs/in) Help spring length Front: 102 mm Spring preload advised: 7-10 mm Compatibility and accessories This suspension kit is compatible with the following BMW E36 models: Saloon (09/1990-12/1998): 316i, 318i, 318is, 320i, 323i, 325i, 325is, 328i, 318tds, 325td,