Tein's flagship coilover, the Flex Z includes all the features you'd want on a suspension kit. 16 level damping adjustment, full ride height control and replacement top mounts make Flex Z the complete package. Highly durable, each Flex Z kit features thorough rust proofing and is made of high strength, highly durable steel for added peace of mind. Key Features: 16-level damping adjustment Full ride-height adjustment Replacement top mounts included Rust-proofed, high-strength steel construction Lowering Specification: Spring rate (Front / Rear): 14 / 8 kgf/mm Standard ride-height drop varies by exact model/year: Lexus Ls430 UCF30 (2001-2006): Front -50mm, Rear -50mm Toyota Celsior UCF30 (2000-2006): Front -45mm, Rear -40mm Fits the following vehicles: Lexus LS430 UCF30 (2000-2006)