General description Coilovers Suspension Kit designed specifically for BMW 3 Series E90 Saloon (2005-2013), E91 Estate (2004-2012), E92 Coupe (2005-2013), and E93 Convertible (2006-2013). This kit allows for adjustable height lowering to enhance your vehicle's performance and aesthetics. Please note that no top mount is included, and modification is required if using the OE top mount. Technical specifications Adjustable height: Front lowering 30-85mm Adjustable height: Rear lowering 30-65mm Spring rate Front: 5kg/mm (lbs/in) Spring rate Rear: 9.5kg/mm (lbs/in) Spring length Front: 172mm Spring length Rear: 262mm Front spring inner diameter: 62mm Rear spring inner diameter: 64mm Coilover overall length Front: 365-500mm Coilover overall length Rear: 500-650mm Quantity: 2x front shocks, 2x rear shocks, 2x front springs, 2x rear springs, 2x C-Spanners for adjustment Installation Professional installation and alignment are suggested for optimal performance. Usage This Coilovers Suspension