General description Adjustable Damper Coilovers designed for Lexus IS250, IS350, IS F, and GS300/GS350 models. This lowering kit allows for a height adjustment of 1" to 3", enhancing the vehicle's stance and lowering its center of gravity. The kit includes 4 shock absorbers and 4 springs, providing a complete suspension solution for improved ride quality. 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: 12 kg/mm (672 in/lbs) Rear Spring Rate: 9 kg/mm (504 in/lbs) Shock type: Twin tube Spring Preload: 7-10 mm Warranty: 2 years for any manufacturing defect Quantity: 2 pieces front + 2 pieces rear Compatibility and accessories Compatible with Lexus IS250 / IS350 (GSE20/21) RWD 2005-2013 Compatible with Lexus IS F (USE20) RWD 2007-2014 Compatible with Lexus GS300 / GS350 (GRS190/91) RWD 2006-2011 Height adjustment tools included Installation Professional