The Tanabe Sustec Pro Z40 coilover system is the upper echelon of coilovers for your FR-S. The 40 way damping adjustment will allow you to fine tune your suspensions feel and handling characteristics to give you the perfect ride that you demand. The twin tube design allows for longer stroke over mono tube and the low pressure gas system allows for great control over rough services. The Z40 is a fully threaded damper, allowing you to adjust ride height independently of the spring preload. This lets you to alter the height of the car without sacrificing comfort. Nickel plating and a black powder coating finish gives the coilovers a durable, long lasting finish that will resist the elements for years to come. Tapered locking nuts prevent any possibility of loosening during your spirited driving runs. If you are looking for the pinnacle of performance for your BRZ, look no further than the Z40.