General description Coilovers Suspension Kit designed for Lexus IS250, IS350 (GSE20/GSE21) from 2006 to 2013, Lexus IS F from 2008 to 2014, and Lexus GS300, GS350 (RWD only) from 2007 to 2011. This kit allows for adjustable height, enhancing the vehicle's stance and lowering the center of gravity. Technical specifications Adjustable Height: 1" to 3" Damping: 24 levels of rebound damping adjustable Top mounts: Standard rubber top mount (front and rear) Front Spring Rate: 14 kg/mm (784 in/lbs) Rear Spring Rate: 12 kg/mm (672 in/lbs) Shock type: Twin tube Spring Preload: 7-10 mm Installation Professional installation and alignment are suggested for optimal performance. Usage This suspension kit provides a smooth and forgiving ride for city use at any speed, while also effectively absorbing hard impacts. The separate height adjustment feature does not affect damper stroke, and height can be adjusted with the coilovers installed on the vehicle. Other information Height adjustment tools