Tein Street Basis Z Coilovers

2013–2016 Scion FR-S, 2017–2020 Toyota 86, 2013–2020 Subaru BRZ

GSQ54-8USS2

Overview:

The Tein Street Basis Z Coilovers are an affordable, high-quality suspension upgrade designed specifically for the Scion FR-S (2013–2016), Toyota 86 (2017–2020), and Subaru BRZ (2013–2020). These coilovers provide full height adjustability, allowing enthusiasts to fine-tune their ride height for improved handling and aesthetics. Featuring twin-tube shock absorbers, the Street Basis Z offers a comfortable ride with enhanced stability, making it an excellent choice for daily driving and spirited street performance.

Engineered to deliver a balance of comfort and control, these coilovers are ideal for drivers seeking an entry-level performance suspension without compromising quality or durability.

Key Features:

The Street Basis Z Coilovers incorporate advanced technology and thoughtful design to provide reliable performance and ease of use. Key features include:

• Full height adjustability via a simple lower spring seat mechanism for precise ride height tuning
• Twin-tube shock absorber design for longer stroke and smoother operation over varied road surfaces
• OEM front and rear upper mounts retained for factory fitment and ride quality (mounts not included)
• Durable TEIN-green powder coating with patented 2-layer, 1-bake anti-rust finish for superior corrosion resistance
• Special ZT Coating on ride height adjustment threads to resist abrasion and corrosion, ensuring long-lasting adjustability
• Cold-formed SAE9254 steel springs with high tensile strength for excellent sag resistance and consistent performance
• High-performance damper oil that maintains stable viscosity across a wide temperature range, resisting cavitation and deterioration
• Optimized dust boots to protect piston rods from damage and contamination, enhancing shock absorber longevity
• Designed for street use with a focus on comfort, stability, and durability

Construction & Design:

The Street Basis Z coilovers feature a sealed twin-tube structure that simplifies manufacturing while maintaining high performance. The shock absorber shell is narrowed at the top and sealed by crimping metal after oil and gas injection, reducing production costs without sacrificing quality. This design allows for a longer stroke and smoother damping compared to typical monotube shocks, resulting in improved ride comfort and control.

Springs are crafted from SAE9254 steel with a minimum tensile strength of 200 kgf/mm², cold-formed for superior resiliency and resistance to sagging. The coilovers are finished with TEIN’s proprietary green powder coating, which provides exceptional rust protection and environmental friendliness by avoiding harmful solvents.

Installation & Fitment:

The Tein Street Basis Z Coilovers are designed to bolt directly onto the factory mounting points of the Scion FR-S, Toyota 86, and Subaru BRZ, utilizing the vehicle’s original upper mounts (not included). Installation is straightforward for experienced enthusiasts or professional installers, requiring no major modifications. Height adjustment is user-friendly, achieved by rotating the lower spring seat to raise or lower the vehicle as desired.

What's Included:

• Front and rear coilover assemblies (shock absorbers with springs pre-installed)
• Lower spring seats for ride height adjustment
• Dust boots for piston rod protection
• Installation instructions

Ideal For:

The Street Basis Z Coilovers are perfect for drivers who want to improve their vehicle’s handling and stance without breaking the bank. They suit daily drivers who desire a smoother, more controlled ride over rough roads, as well as enthusiasts looking for a reliable suspension upgrade for street performance. These coilovers offer a great balance of comfort, durability, and adjustability for Scion FR-S, Toyota 86, and Subaru BRZ owners.

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.