TEIN has always aimed to stay at the forefront of offering high performance suspension with a strong emphasis on meeting our customers' demand for affordability. Our latest products reflect our efforts in meeting those needs while maintaining our well-known manufacturing standards for quality. NEW for 2016 - Street Advance Z. The latest generation of our existing Street Advance suspension kit incorporates many of the same technologies that have made them so popular by enthusiasts, but now made even more affordable by our streamlined manufacturing processes and our new fully sealed damper structure. These new manufacturing processes drastically reduce starting prices for the new line for complete kits. Never before has TEIN been able to provide such high quality performance into an incredibly affordable package, until now. To date, this has been one of our proudest achievements. Thread-type adjustable, Twin-Tube, Uses OE Mounts, Durable and Reliable, Damping Force Adjustable, EDFC Compatible. Thanks to its smooth compression and high durability, the dust boot guards the piston rod from damage, and keeps foreign material out of the shock absorber. (Some vehicles use their OE dust boots). Cold formed with SAE9254 steel (minimum tensile strength 200 kgf/mm2), our springs are outstandingly sag-proof and boast extreme resiliency. Superior rust protection is ensured with a highly durable powder coating that does not peel or flake. Our high-quality springs can be used without worries, in any conditions.