Tein's coil over family of products offers you a variety of options in both adjustability and pricing. The Flex-Z coilovers are designed for the ultimate balance of comfort and performance for street or circuit use. The damper body is threaded to its full length to offer separate spring-preload and smooth ride-height adjustment. The front struts add camber adjustability, and the incorporated Pillowball upper-mounts lend increased steering feedback. The kit comes with one of a kind, user-friendly, ride-height adjusting wrench with a 12.7mm (1/2in) sq. hole for attaching spinner handle and/or torque wrench for tightening at high torque. Get the Flex-Z kits: Ultimate in coil over adjustability! Features: Steel construction Twin tube internal construction 16-level damping force adjustment High spec damper oil for long-term superior performance High-tensile coil over springs are very durable, anti-corrosive and offer excellent resistance to sagging.