General description Upgrade your BMW 3 Series E46 with this high-performance Damper Coilover Suspension Kit, designed for models from 1997 to 2007. This kit allows for adjustable height and damping, enhancing your vehicle's handling and ride comfort while providing a more aggressive stance. Technical specifications Height adjustable: Yes, lowering 25-75mm depending on vehicle model Damping adjustable: 24 levels of rebound damping force Front spring rate: 8 kg/mm (448 lbs/in) Rear spring rate: 7 kg/mm (392 lbs/in) Front spring inner diameter: 70.5 mm Rear spring inner diameter: 63-69 mm Spring length: 180 mm (both front and rear) Shock type: Twin tube Spring preload: 7-10 mm Quantity: 2x Front coil-overs, 2x Rear coil-overs, 2x C spanners, 1x Allen wrench Compatibility and accessories This suspension kit is compatible with the following BMW 3 Series E46 models: Saloon (1997-2005): 316i, 318i, 320i, 323i, 325i, 328i, 330i, 318d, 320d, 330d Convertible (2000-2007): 318Ci, 320Ci, 323Ci,