TEIN Street Basis Z Coilovers Nissan 350Z (2003-2008) GSP26-8UAS2Category: Coilover HardwareTEIN Street Basis Z Coilovers do not include top hats or camber plates (simply reuse your OEM upper mounts)Spring Rates: 504 lb front and 504 lb rearCoupe - Lowers max of: 3.1" front and 2.1" rearConvertible - Lowers max of: 3.3" front and 2.0" rearTEIN Street Basis Z Coilovers feature:Low price due to new manufacturing process pioneered by TEIN.Ride height adjustable from about 1" drop at max height to about 3" drop at max loweringTwin tube system with a longer stroke and smaller repulsive force for an excellent rideReuses your original upper mounts from your factory suspension (another way to reduce cost)TEIN Street Basis Z Coilovers are height adjustable but not dampening adjustable. TEIN is able to offer these coilovers at such a low price due to their new manufacturing process that seals the coilovers and makes them one unit. Handling and ride quality are not affected, but the price goes way down. TEIN coilovers are some of our favorite and are one of the most popular lines we carry.Additional features of these coilovers:Dust Boots 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. No-Sag Springs 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.(Some vehicles use their OE dust boots)High-Performance Damper Oil Since TEIN's damper oil maintains a stable viscosity in a broad temperature range, it sustains smooth stroke and reliable damping force in a variety of circumstances.Due to excellent anti-foaming properties, it's resistant to cavitation (bubble forming). Since it withstands high heat too, it's suitable for intense sport driving as well.Furthermore, the damper oil keeps up its superior performance long-term, because it's resistant to deterioration over time.Rust Proofing A bright TEIN-green powder paint is used on the shock absorber's shell case. Our powder coating technique produces an extremely strong and durable barrier. No harmful organic solvents are used, for minimal pollution.Superior durability and corrosion resistance are achieved by TEIN's patented 2-Layer, 1-Bake powder coating method, which uses 2 layers of anti-rust paint on a blasted surface. (Japanese patent number 4347712)Special Surface Treatment 'ZT Coating' Our unique ZT Coating surface treatment on the ride height adjustment thread is abrasion resistant against gravel/debris, and further enhances its corrosion resistance.With zero claims for stuck parts due to rust in 500,000 shock absorbers, TEIN shock absorbers are amazingly rustproof. We're confident of customer satisfaction even in coastal areas or regions with heavy snowfall.