Tein VST76-C1SA3-C Flex Z Coilovers 1998-2005 Lexus GS300/GS400/GS430 3.0L/4.0L

Vehicle Fitment

• 1998-2005 Lexus GS300 (4-Door Sedan, 3.0L I6, RWD) - Chassis: JZS160L
• 1998-2000 Lexus GS400 (4-Door Sedan, 4.0L V8, RWD) - Chassis: UZS160L
• 2001-2005 Lexus GS430 (4-Door Sedan, 4.3L V8, RWD) - Chassis: UZS160L
• 1997-2004 Toyota Aristo (JDM equivalent of GS300/GS400) - Chassis: JZS160L / JZS161

Fitment Notes

• RWD applications only - does not fit AWD variants
• Not compatible with OEM electronic damping control systems
• EDFC compatible (EDK05-12120); rear motor install may require interior modification
• Upper mounts included for all positions

Features

• Full-length ride height adjustment with minimal change in ride quality or shock travel
• 16-level linear damping force adjustment (compression and rebound simultaneously)
• Twin-tube internal design for superior street comfort and smooth stroke at any ride height
• Compatible with TEIN EDFC Active system for optional electronic in-car damping adjustment
• No-sag springs; ZT corrosion-resistant multi-layer coating on threaded sleeve
• Made in Yokohama, Japan; 1-year manufacturer warranty

Specifications

• Front Spring Rate: 672 lbs/in (12.0 kgf/mm)
• Rear Spring Rate: 560 lbs/in (10.0 kgf/mm)
• GS300 (JZS160L) Front Range: -0.2 to -4.1 in | Rear Range: -0.2 to -5.4 in
• GS400/GS430 (UZS160L) Front Range: -0.2 to -4.0 in | Rear Range: -0.2 to -5.6 in
• Damping Adjustment: 16-level (simultaneous compression and rebound)
• Upper Mount Type: Reinforced Rubber (included)
• Damper Structure: Twin-Tube, Sealed
• Drivetrain: RWD
• EDFC Compatible: Yes
• Chassis Codes: JZS160L, JZS161 (GS300/Aristo), UZS160L (GS400/GS430)

Included Components

• 2x Front Coilover Assemblies (shock + spring)
• 2x Rear Coilover Assemblies (shock + spring)
• 4x Upper Mounts (reinforced rubber)
• 2x Hook Spanners
• 1x TEIN Sticker Sheet
• 1x Instruction Manual

Product Description

The Tein VST76-C1SA3-C Flex Z Coilovers are a full-length, height-adjustable coilover kit covering the 1998-2005 Lexus GS300, 1998-2000 GS400, and 2001-2005 GS430 in RWD configuration, along with their JDM equivalents, the Toyota Aristo (JZS160L/JZS161). With matched 672 lbs/in front and 560 lbs/in rear spring rates tuned for the GS platform's double-wishbone suspension, the kit delivers a balanced combination of ride compliance and cornering stability. The wide adjustable range - up to 4.1 inches front and 5.6 inches rear - gives owners full control over stance from a mild street drop to an aggressive low-profile setup.

Built in Yokohama, Japan with TEIN's sealed twin-tube design and 16-level damping adjustment, the Flex Z allows ride feel to be dialed in from a comfortable daily commute setting to a firmer, more responsive configuration for spirited driving. The kit is EDFC-compatible for owners who want electronic in-car damping control. Backed by TEIN's 1-year warranty, the VST76-C1SA3-C is a precision coilover upgrade engineered specifically for the S160 GS chassis.