General description Street Coilovers Suspension Spring Strut Kit designed for BMW E60 Saloon 5 Series models from 2004 to 2010. This kit is suitable for RWD models including 525i, 528i, 530i, 535i, 545i, and 550i, but will not fit M models. It is ideal for daily driving, occasional autocross, and track days. Technical specifications Complete coilovers: 2 front and 2 rear Front Top mounts: Pillow ball top mounts Rear Top mounts: Rubber top mounts Dampening: Not adjustable Spring rate: Front: 10 kg/mm (560 lbs/in), Rear: 7 kg/mm (392 lbs/in) Adjustable height: Lowers from 1'' to 3'' Shock type: Twin tube Spring preload: 7-10 mm Warranty: 2 years Installation Professional installation is suggested No instruction included Usage Lowered height adjustment enhances center of gravity and aggressive stance Designed for daily driving and occasional performance use Other information Height adjustment tools included Pillow ball top mount improves steering feel and response Components made from