Tein Street Basis Z Coilovers

2004–2006 Scion xA / xB

GSY36-81AS2

Overview:

The Tein Street Basis Z Coilovers are a cost-effective suspension upgrade designed specifically for the 2004 to 2006 Scion xA and xB models. These coilovers offer full height adjustability, allowing enthusiasts to tailor their ride height for improved stance and handling without compromising comfort. Featuring twin-tube shock absorbers, the Street Basis Z kit delivers a smooth and controlled ride suitable for daily driving and spirited street use. This kit is ideal for drivers seeking enhanced suspension performance at an accessible price point.

Key Features:

Engineered with a focus on affordability and quality, the Street Basis Z coilovers incorporate several advanced features:

• Full height adjustability via a simple lower spring seat mechanism for easy ride height customization
• Twin-tube shock absorber design providing longer stroke and reduced repulsive force for superior ride comfort
• OEM front and rear upper mounts retained for factory-like fitment and reliability
• Durable dust boots protect piston rods from debris and damage, ensuring long-lasting performance
• Cold-formed SAE9254 steel springs with high tensile strength for excellent sag resistance and resiliency
• Highly durable powder-coated springs with superior rust protection to withstand harsh conditions
• High-performance damper oil maintaining stable viscosity across a wide temperature range for consistent damping
• TEIN’s patented two-layer, one-bake green powder coating on shock bodies for exceptional corrosion resistance
• Unique ZT Coating on adjustment threads to prevent abrasion and corrosion, ensuring smooth ride height changes
• Not compatible with TEIN’s EDFC electronic damping force controller

Construction & Design:

The Street Basis Z coilovers feature a sealed twin-tube structure that simplifies production while maintaining durability and performance. The shock absorber shell is crimped and sealed after oil and gas injection, reducing manufacturing costs without sacrificing quality. The use of OEM upper mounts ensures a direct fit and preserves the vehicle’s original suspension geometry. Springs are crafted from SAE9254 steel, known for its high tensile strength and resistance to sagging, and finished with a robust powder coating that resists peeling and corrosion. The ride height adjustment threads receive TEIN’s exclusive ZT Coating, enhancing abrasion resistance and longevity even in challenging environments.

Installation & Fitment:

Installation of the Tein Street Basis Z coilovers is straightforward, utilizing the vehicle’s original front and rear upper mounts for a seamless fit. The kit is designed for the 2004 to 2006 Scion xA and xB models, requiring no modifications to the chassis or suspension components. Ride height adjustments are made by turning the lower spring seat, allowing for quick and easy customization. While the kit does not include upper mounts or EDFC compatibility, it provides a reliable and cost-effective suspension upgrade for enthusiasts looking to improve handling and aesthetics.

What's Included:

• Front and rear twin-tube coilover shock absorbers with adjustable lower spring seats
• High-quality, no-sag springs with powder coating
• Protective dust boots on shock piston rods
• Installation hardware (where applicable)
• Detailed installation instructions

Ideal For:

The Tein Street Basis Z coilovers are perfect for Scion xA and xB owners seeking an affordable suspension upgrade that balances ride comfort with improved handling and adjustability. They are well-suited for daily drivers who want a lowered stance and enhanced road feel without the harshness of more aggressive coilover setups. Enthusiasts on a budget will appreciate the quality construction and reliable performance delivered by this kit.

TEIN is a Japan-based suspension brand offering high-performance coilovers, lowering springs, and motorsport-oriented damping solutions for street, track, and even gravel/rally-style applications. Known for broad vehicle coverage and enthusiast-friendly tuning options, TEIN is a go-to when you want sharper handling, improved stance, and adjustable control without jumping straight to full race hardware.