TEIN GSF12-8UAS2 Street Basis Z Coilover Kit

The TEIN Street Basis Z Coilover Kit represents the latest evolution in TEIN's affordable performance suspension lineup, combining quality engineering with cost-effective manufacturing. This complete coilover system delivers adjustable ride height, improved handling, and enhanced stance without compromising daily driving comfort.

Key Features:

• Height adjustable twin-tube coilover system for front and rear
• 336 lb/in front and 336 lb/in rear spring rates perfectly matched to damper valving
• Thread-type height adjustment via TEIN's proprietary ZT coated threaded sleeve
• Fixed damper settings optimized for street performance and comfort
• Shortened shell case design provides optimal damper stroke at lowered heights
• SAE9254 cold-formed steel springs with powder coating for superior rust protection
• Twin-tube internal design offers smooth compression and excellent ride quality
• Fully sealed damper structure for improved durability
• Reuses OEM upper mounts for simplified installation
• One-piece aluminum spring seats with Delrin thrust washers
• Backed by TEIN's 1-year limited warranty

What's Included:

• Complete set of 4 coilover assemblies (front and rear)
• 4 pre-matched coilover springs
• 4 rubber bump stops
• 2 hook spanners for adjustment
• 4 spring seats and 4 spring locks
• 4 dust covers
• 4 Delrin thrust washers
• TEIN sticker sheet and instruction manual

The Street Basis Z is designed specifically for daily drivers seeking improved handling performance and adjustable stance. TEIN's engineers have pre-selected spring rates and damper valving to eliminate the guesswork of matching aftermarket springs to shocks, while the height adjustability allows fine-tuning for the perfect stance and corner balancing.