Application: For BMW 5 series (E60) 2004-2010 Saloon AWD model: 525xi, 528i xDrive, 528xi, 530xi, 535i xDrive, 535xi Will NOT fit any models equipped with air ride suspension Note: The front damper knuckle insert diameter is 49mm or with bushing 55mm. Specification: Adjustable height: lowering 1-3 inch Damping: 24 levels rebound damping adjustable Top mounts: front - pillow ball top mounts Rear standard rubber top mounts Spring rate Front: 10 kg/mm (560 lbs/in) Spring rate Rear: 7 kg/mm (392 lbs/in) Spring length Front: 200mm Spring length Rear: 200mm Coilover overall length Front: 550mm-580mm Coilover overall length Rear: 500mm-575mm Shock type: Twin tube Spring Preload: 7-10 mm Package Included: complete coilovers for 2 front and 2 rear; a pair wrench for height adjustment Feature: 1. Lowered height adjustment from 1" - 3" which allow lower center of gravity and also add a more aggressive stance. 2. A 24 rebound damping adjustment level allows you the ability to perfectly dial in