General description Full Coilovers Suspension designed for Subaru Impreza WRX and STI models, as well as Saab 9-2X, providing adjustable height and improved ride quality. This complete suspension kit includes 4 shock absorbers and 4 springs, allowing for an easy installation and enhanced vehicle performance. Technical specifications Adjustable height: Yes, lowering from 1" to 3" Damping: 24 levels of rebound damping adjustable Top mounts: Pillow ball top mounts Adjustable camber plate: Front only Spring rate Front: 9 kg/mm (504 lbs/in) Spring rate Rear: 7 kg/mm (392 lbs/in) Shock type: Twin tube Spring Preload: 7-10 mm High Tensile performance spring - Stress tested over 600,000 times with less than 0.04% distortion Compatibility and accessories For Subaru Impreza WRX 2000.08-2007.06 GDA GD9 GGA For Subaru Impreza WRX STI 2000.10-2004.06 GDB (RIM P.C.D.=100) For Saab 9-2X 2005-2007 GGA GGE Height adjustment tools included Installation Professional installation and alignment suggested