BC Racing BR Series Coilover Kit for 06-10 Mazda Miata MX-5 Mono-tube shock design 30 levels of damping force adjustment, adjust compression/rebound 2 axis bushings allow precise, single wrench adjustment accurately under load. Front Spring Rate: 7kg/mm Rear Spring Rate: 5kg/mm Front Camber Plates Not Applicable, Rear Camber Plates Not Applicable Separate full length height adjustable, 1 year warranty and rebuildable