TEIN VSS52-C1SA4-C Flex Z Coilover Kit - Front and Rear

The TEIN Flex Z coilover kit is a complete adjustable suspension system designed to deliver an optimal balance between street comfort and performance driving. This full coilover damper kit includes front and rear shock absorbers with springs and upper mounts for a complete bolt-in installation.

Key Features:

• Twin-tube internal construction for superior ride comfort and sufficient stroke travel on lowered vehicles
• 16-stage damping force adjustment allows simultaneous compression and rebound tuning via top-mounted dial
• Full-length ride height adjustment system with independent spring preload adjustment for minimal ride quality change
• Spring rates: 6 kg/mm front, 7 kg/mm rear for balanced handling characteristics
• Includes TEIN upper mounts (pillow ball or reinforced rubber depending on application)
• Compatible with EDFC and EDFC Active electronic damping controllers (sold separately)
• Sealed damper structure reduces manufacturing costs while maintaining TEIN quality standards
• SAE9254 cold-formed springs with durable powder coating for superior corrosion resistance
• Advanced Needle valve technology provides wide damping force adjustment range
• Temperature-stable damper oil with anti-foaming properties for consistent performance

Made in Japan at TEIN's Yokohama factory, each Flex Z application is test-fitted and road-tested by suspension engineers to ensure proper fitment and performance. The twin-tube design uses low gas pressure to minimize friction, allowing smooth stroke movement that follows rough road surfaces while maintaining stability at higher speeds. The full-length adjustment system enables ride height changes without altering damper stroke or spring preload, preserving ride quality across the adjustment range.