ST XA Coilovers - Toyota GT86 / GR86 / Subaru BRZ - 18258004

ST XA Coilover Suspension – Toyota GT86 / GR86 / Subaru BRZ – 18258004

Upgrade your Toyota GT86, GR86 or Subaru BRZ with the ST XA Coilover Suspension Kit, designed for drivers who want more control than a fixed-damping setup while retaining strong road usability.

Developed using KW Automotive suspension technology, the ST XA combines adjustable ride height with independently adjustable rebound damping, allowing the suspension to be tailored around comfort, fast-road driving and more performance-focused use.

Part number: 18258004

Adjustable Rebound Damping

The ST XA allows the rebound damping to be adjusted independently, giving you greater control over the way the car responds to steering inputs, body movement and changes in road surface.

Current ST XA specifications list 16-stage rebound adjustment, allowing the setup to be made firmer for greater body control and response, or softened for improved ride comfort.

Increasing rebound damping can help reduce body movement and sharpen steering response, while reducing rebound damping allows the suspension to react more freely over rougher roads.

Adjustable Ride Height

For these applications, the commonly listed adjustment range is approximately:

• Front: 20–50mm lowering

• Rear: 25–55mm lowering

Some distributor data quotes 20–50mm at both axles, so the supplied vehicle-specific documentation should always be followed when setting the final ride height.

Galvanized Steel Construction

ST XA coilovers use galvanized steel damper housings with additional corrosion protection.

The system uses a continuously threaded adjustment design, allowing the ride height to be changed through the spring perch while retaining the vehicle-specific damper setup.

Key Features

• ST XA coilover suspension

• 16-stage adjustable rebound damping

• Height adjustable front and rear

• Approx. 20–50mm front lowering

• Approx. 25–55mm rear lowering

• Galvanized steel damper housings

• Twin-tube damper construction

• Improved body control and steering response

• Adjustable balance between comfort and sportier handling

• Developed using KW Automotive suspension technology

• Suitable for road and fast-road use

• Part number: 18258004

More Control Than ST X

Where the ST X uses fixed damping, the ST XA adds adjustable rebound control.

This makes it better suited to drivers who want to fine-tune the way the car feels rather than relying on a single factory-set damper calibration.

The ability to alter rebound damping is particularly useful on the GT86, GR86 and BRZ platform, where small suspension changes can have a noticeable effect on steering response, chassis balance and overall driver involvement.

Vehicle Fitment

Part number 18258004 is suitable for selected applications including:

• Toyota GT86 ZN6

• Toyota GR86 ZN8

• Subaru BRZ ZC6

• Subaru BRZ ZD8

• Scion FR-S

ST technical documentation lists a maximum permissible front axle load of approximately 876kg, while current application listings quote approximately 943kg rear.

Exact vehicle specification and axle weights should always be checked before ordering.

Product Image & Specification Note

Product images are for illustration purposes only and may not show the exact specification supplied.

ST Suspension kits can vary depending on vehicle generation and application. If you are unsure whether this kit is suitable for your GT86, GR86 or BRZ, please contact us before ordering so we can confirm compatibility.

Professional Installation Recommended

Professional installation is recommended.

A full four-wheel alignment should also be carried out after installation and once the final ride height has been selected to ensure correct geometry, tyre wear and handling characteristics.

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