ST Suspensions ST XTA Coilover Kit

Part No: 18245818
Adjustable Damping with Top Mounts

Fits: 2015–2021 Subaru WRX & STI (AWD Sedan)

⚠️ Please allow 5–10 business days to build and ship.

The ST XTA Coilover Kit merges adjustable rebound damping with included aluminum top mounts for enhanced alignment control and refined handling. Built with KW-engineered components and durable galvanized steel construction, this system provides both street comfort and performance-oriented adjustability.

Lowering Range

• Front: 0.6" – 1.4"

• Rear: 0.2" – 1.4"

Spring Rates (Verified for Part #18245818)

• Front: 400 lbs/in (≈ 7.14 kg/mm)

• Rear: 285 lbs/in (≈ 5.09 kg/mm)

This spring rate combination offers firmer control and responsiveness compared to stock suspension while preserving street comfort.

Key Features

• Adjustable Rebound Damping – Refine suspension feel from comfort to aggressive handling

• Included Aluminum Top Mounts – Allows camber adjustment for enhanced tire contact and cornering grip

• Height Adjustable – Customize ride height while maintaining proper shock travel

• Galvanized Steel Construction – Corrosion-resistant durability

• Twin-Tube Damper Design – Balanced performance and comfort

• Direct Bolt-On Fitment – Designed to fit perfectly on the 2015–2021 WRX & STI AWD chassis

Performance Benefits

The ST XTA system lets you fine-tune suspension behavior for both everyday driving and more demanding performance situations. Rebound adjustment and top-mount camber control provide confidence-inspiring handling and greater control over tire contact during cornering and hard driving.

Why Choose ST XTA for Your WRX/STI?

This kit is ideal for enthusiasts who want adjustable damping, alignment control, and a performance-ready suspension platform without stepping up to a full motorsport coilover system.