Tein Street Advance Z Coilovers

2008–2014 Scion xD

GSL70-91AS2

Overview:

The Tein Street Advance Z Coilovers are a premium suspension upgrade designed specifically for the 2008 to 2014 Scion xD. Offering full height and damping adjustability, these coilovers provide an exceptional balance of ride comfort and handling performance at an affordable price point. Ideal for enthusiasts seeking improved vehicle dynamics without sacrificing daily drivability, the Street Advance Z system reuses the OEM upper mounts for a straightforward installation and reliable fitment.

Engineered to deliver a smooth, controlled ride over varying road conditions, these coilovers are perfect for drivers who want enhanced cornering stability and responsive handling while maintaining comfort on rough or uneven surfaces.

Key Features:

The Tein Street Advance Z Coilovers incorporate advanced technology and quality materials to ensure superior performance and durability. Key features include:

• Full height adjustability via a threaded lower spring seat for precise ride height tuning
• Damping force adjustability with an easy-to-use adjustment dial to tailor ride comfort and handling
• Twin-tube damper design offering longer stroke and reduced repulsive force for enhanced ride comfort compared to mono-tube systems
• Reuse of the vehicle’s original upper mounts for simplified installation and cost savings
• Cold-formed SAE9254 steel springs with high tensile strength for excellent sag resistance and resiliency
• Durable TEIN-green powder coating with patented 2-layer, 1-bake anti-rust treatment for superior corrosion protection
• Unique ZT Coating on ride height adjustment threads to resist abrasion and corrosion, ensuring smooth adjustment over time
• High-performance damper oil with stable viscosity and anti-foaming properties for consistent damping under various temperatures and driving conditions
• Optimal dust boots designed to protect piston rods from damage and contamination, enhancing longevity

Construction & Design:

Tein’s Street Advance Z Coilovers are built with a focus on durability and performance. The springs are crafted from SAE9254 steel, known for its exceptional tensile strength and resistance to sagging, ensuring long-lasting spring performance. The shock absorber bodies feature a vibrant TEIN-green powder coating applied using a patented two-layer, one-bake process that provides outstanding corrosion resistance and environmental friendliness by avoiding harmful solvents.

The twin-tube damper design allows for a longer stroke and smoother operation, which translates into superior ride comfort without compromising handling precision. The ride height adjustment threads are treated with Tein’s proprietary ZT Coating, which prevents rust and abrasion, guaranteeing reliable adjustment even in harsh environments such as coastal or snowy regions.

Installation & Fitment:

The Street Advance Z Coilovers are designed for direct fitment on the 2008–2014 Scion xD, utilizing the vehicle’s original upper mounts to simplify installation and reduce costs. This design choice means no additional mounting hardware is required, and the coilovers can be installed using standard suspension tools. Full height and damping adjustability allow for personalized setup to match driver preferences and road conditions.

What's Included:

• Front and rear coilover assemblies
• Lower spring seats with threaded adjusters for ride height tuning
• Adjustment dials for damping force control
• Protective dust boots
• Installation instructions

Ideal For:

The Tein Street Advance Z Coilovers are ideal for Scion xD owners seeking an affordable yet fully adjustable suspension upgrade. Whether you’re looking to improve handling for spirited street driving, lower your vehicle for a more aggressive stance, or enhance ride comfort over rough roads, these coilovers offer a versatile solution. They are well-suited for daily drivers who want enhanced control without sacrificing comfort, as well as enthusiasts preparing their vehicle for occasional track use.

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.