ST XTA Coilovers - Toyota GT86 / GR86 / Subaru BRZ - 18258804

ST XTA Coilover Suspension – Toyota GT86 / GR86 / Subaru BRZ – 18258804

Upgrade your Toyota GT86, GR86 or Subaru BRZ with the ST XTA Coilover Suspension Kit, designed for drivers who want greater control over damping, ride height and front suspension geometry.

Developed using KW Automotive suspension technology, the ST XTA combines adjustable rebound damping, adjustable ride height and aluminium Unibal front top mounts, making it particularly well suited to fast-road and occasional track use.

Part number: 18258804

Adjustable Rebound Damping

The ST XTA features 16-stage rebound adjustment, allowing the suspension to be tailored around driving style, road conditions and vehicle setup.

Increasing rebound damping can provide greater body control and a more responsive chassis feel, while reducing rebound damping can allow the suspension to react more freely over uneven road surfaces.

This gives the XTA more setup flexibility than the ST X and XA systems while remaining straightforward to adjust.

Adjustable Unibal Top Mounts

The ST XTA includes aluminium Unibal front top mounts with camber adjustment.

These allow the front suspension geometry to be fine-tuned after installation, helping optimise tyre contact, steering response and front-end grip.

The additional camber adjustment is particularly useful for fast-road and track-focused builds where more aggressive geometry may be required.

Adjustable Ride Height

For this application, the commonly listed lowering range is:

• Front: 20–50mm

• Rear: 25–55mm

Ride height can be tailored within the approved adjustment range using the threaded coilover system.

Galvanized Steel Construction

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

Combined with corrosion-resistant adjustment components, multi-coated springs and robust sealing, the system is designed to provide reliable performance through regular road use.

Key Features

• ST XTA coilover suspension

• 16-stage adjustable rebound damping

• Camber-adjustable aluminium Unibal front top mounts

• Linear race spring system

• Height adjustable front and rear

• 20–50mm front lowering

• 25–55mm rear lowering

• Galvanized steel damper housings

• Improved body control and steering response

• Greater front geometry adjustment

• Developed using KW Automotive technology

• Suitable for fast-road and occasional track use

• Part number: 18258804

More Focused Than ST XA

Where the ST XA adds rebound adjustment over the fixed-damping ST X, the ST XTA takes the next step by adding adjustable aluminium Unibal front top mounts and a more performance-focused spring setup.

This gives the driver greater control over both damping and front suspension geometry, making the XTA particularly suitable for cars running performance tyres, more aggressive alignment settings or regular spirited driving.

Vehicle Fitment

Part number 18258804 is suitable for selected applications including:

• Toyota GT86 ZN6

• Toyota GR86 ZN8

• Subaru BRZ ZC6

• Subaru BRZ ZD8

• Scion FR-S

Maximum axle loads are approximately:

• Front: 876kg

• Rear: 943kg

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.

Because this kit includes adjustable front top mounts, a more detailed geometry setup can help make the most of the available camber adjustment and optimise tyre wear, steering response and front-end grip.

Explore More

Toyota GT86 – Explore suspension, braking and performance upgrades for the Toyota GT86.

Toyota GR86 – Explore suspension, braking and performance upgrades for the Toyota GR86.

Subaru BRZ – Explore suspension, braking and performance upgrades for the Subaru BRZ.

ST Suspension – Browse ST coilovers and suspension upgrades for road and fast-road use.

Suspension & Handling – Explore coilovers, alignment components, bushes and chassis upgrades.