Open Box Special: 16-Level Damping Coilover For BMW 5 Series 5th Gen E60/E61 2003–2010 PS006620Unless there is a product quality issue, this product is not eligible for the 30 day return policy. This Open Box part comes with a 1 year warranty. Package Includes Front coilovers x 2 pcs Rear coilovers x 2 pcs Wrench x 2 pcs Features Mono tube shock design with larger oil gas capacity Adjustable ride height Adjustable pre load spring tension Hi Tensile performance spring (tested 600,000 cycles with <0. 04% distortion) Fitted rubber boots to protect