Tein Street Basis Z Coilovers – 1998–2005 Lexus GS300 / GS400 / GS430 (S160) | GST76-81SS2

Tein’s Street Basis Z coilovers for the 1998–2005 Lexus GS S160 chassis (JZS160, UZS160, UZS161) — fits the GS300 (2JZ-GE), GS400 (1UZ-FE), and GS430 (3UZ-FE). Height adjustable with independent front and rear adjustment, fixed (non-adjustable) street-tuned damping, twin-tube design, made in Japan. The Street Basis Z is Tein’s entry-level coilover — a direct bolt-on solution for GS owners who want adjustable ride height and improved handling over the factory suspension without the cost or complexity of fully adjustable damping.

Fixed Damping — What It Means

The Street Basis Z uses fixed damping — the damping rate is set at the factory and is not adjustable by the user. This is the key trade-off versus mid-tier and premium coilovers with 16, 24, or 32-way adjustable damping. For a Lexus GS used primarily as a street car, fixed damping is a practical choice: Tein’s engineers have tuned the damping for street use on this specific chassis, removing the need to dial in settings. The result is a well-balanced street setup straight from the box. If your GS sees regular track days or you want to tune damping for specific conditions, a coilover with adjustable damping is a better fit. For a daily-driven or VIP-style GS build, the fixed damping Street Basis Z is well-suited.

Key Features

• Height Adjustable: Independent front and rear ride height adjustment — up to approximately 2.5 inches of lowering front and rear. Adjust stance without affecting spring preload (height adjustment is independent of spring perch). Allows the GS to be set at a subtle street drop or a more aggressive VIP stance
• Fixed Street-Tuned Damping: Damping pre-set by Tein for the S160 chassis — optimised for street comfort and spirited driving. No adjustment required or available. Eliminates guesswork for owners who want a quality setup without dialling in damping settings
• Twin-Tube Design: Proven twin-tube shock construction — reliable, consistent street performance. Well-suited to the S160 GS’s role as a daily driver and street car
• Direct Bolt-On: Engineered specifically for the S160 chassis — replaces factory struts and shocks directly. No modification to the vehicle required
• Corrosion-Resistant Finish: Coated for long-term corrosion resistance — relevant for Canadian and northern US climate use
• Made in Japan: Manufactured by Tein at their Japanese facility — Tein has been producing suspension components for over 30 years with a strong motorsport and street performance heritage

Fitment

• Lexus GS300 — JZS160 (1998–2005) — 2JZ-GE
• Lexus GS400 — UZS160 (1998–2000) — 1UZ-FE V8
• Lexus GS430 — UZS161 (2001–2005) — 3UZ-FE V8

Verify your chassis code (JZS160, UZS160, or UZS161) before ordering. A four-wheel alignment is required after installation. Allow coilovers to settle for 100–200 km before final ride height adjustment. Professional installation recommended — coilover installation requires a spring compressor and alignment equipment. Actual lowering range may vary based on vehicle configuration and desired setup.

Specifications

• Brand: Tein
• Series: Street Basis Z
• Part Number: GST76-81SS2
• Damping: Fixed (non-adjustable, street-tuned)
• Shock Design: Twin-tube
• Height Adjustment: Independent front and rear (approx. 2.5" max drop)
• Finish: Corrosion-resistant coating
• Origin: Made in Japan
• Application: Lexus GS300 / GS400 / GS430 S160 (1998–2005)
• Weight: 63.9 lbs (complete set)