BC Racing BR Coilovers 04+ Scion XB Chassis NCP31 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: 4kg/mm Rear Spring Rate: 4kg/mm Front Camber Plates Included, Rear Camber Plates Not Applicable Separate full length height adjustable, 1 year warranty and rebuildable