General description For BMW 5 E39 models (1995-2003) including 520i, 523i, 525i, 528i, 530i, 535i, 540i, 520d, 525d, 530d, 525td, and 525tds. This kit is not compatible with Wagon or M5 models and will not fit self-leveling/air suspension systems. Technical specifications Quantity: Complete coilovers for 2 front and 2 rear Top mounts: Front - Pillow ball top mounts with camber plate; Rear - Rubber top mounts Damping: Non-adjustable Spring rate Front: 12 kg/mm (672 lbs/in) Spring rate Rear: 9 kg/mm (504 lbs/in) Spring length Front: 190 mm Spring length Rear: 190 mm Adjustable height: Lowering 1-3 inches Coilover overall length Front: 490 mm - 540 mm Coilover overall length Rear: 520 mm - 605 mm Shock type: Twin tube Spring preload: 7-10 mm Color: Golden Warranty: 2 Years Installation Professional installation and alignment are suggested as no instructions are included. Usage Lowered height adjustment from 1" - 3" for a lower center of gravity and more aggressive stance Adjustable