TEIN GSSA4-91SS2 Street Advance Z Coilover Kit

The TEIN Street Advance Z Coilover Kit is a high-performance suspension system designed for street driving and spirited performance. This complete coilover kit combines affordability with TEIN's legendary quality, featuring both ride height and damping force adjustability to deliver a customized driving experience.

Key Features:

• 16-way adjustable damping force with Advance Needle technology for precise tuning
• Thread-type ride height adjustment with ZT coated sleeve for corrosion and abrasion resistance
• Twin-tube damper design provides superior ride comfort with longer stroke and smaller repulsive force
• Shortened shell case design optimizes damper stroke at lowered ride heights
• Front spring rate: 5 kgf/mm (280 lbs/in), Rear spring rate: 4 kgf/mm (224 lbs/in)
• Front/Rear height adjustment range: -80mm to -28mm (-3.1 to -1.1 inches)
• SAE9254 steel springs with minimum tensile strength of 200 kgf/mm² for exceptional durability
• TEIN-green powder coating with patented 2-Layer, 1-Bake rust-proofing method
• High-performance damper oil maintains stable viscosity across broad temperature ranges
• Utilizes OEM upper mounts for simplified installation
• EDFC compatible for electronic damping force adjustment (requires optional EDFC Motor Kit)

The Street Advance Z represents TEIN's streamlined manufacturing approach using a fully sealed damper structure, making professional-grade coilovers more accessible without compromising quality. The unique ZT coating on adjustment threads ensures smooth operation even in harsh conditions including coastal areas and regions with heavy snowfall. Whether navigating daily commutes or tackling spirited back-road drives, these coilovers deliver exceptional performance and reliability.