General description Coilovers Kit designed for BMW 5 Series E39 Saloon models (1995-2004) including 520i, 523i, 525i, 528i, 530i, 535i, 540i, 520d, 525d, 530d, 525td, and 525tds. This kit allows for adjustable suspension with a lowering range of 0-25mm. Please note that this kit does not include top mounts and modification is required if using original equipment (OE) top mounts. It is not compatible with Wagon or M5 models and will not fit self-leveling/air suspension models. Technical specifications Front Adjustable height: lowering 0-25mm Rear Adjustable height: lowering 0-25mm Spring rate Front: 8 kg/mm (448 lbs/in) Spring rate Rear: 2.5 kg/mm (140 lbs/in) Spring length Front: 170 mm Spring length Rear: 355 mm Shock type: Twin tube Top mounts: Not included Warranty: 2 years for any manufacturing defect Installation Professional installation and alignment are suggested for optimal performance. The vehicle's original upper mounts must be used, which are not included in this product