ST Suspensions ST X Coilover Kit

Part No: 13245004
Fixed Damping

Fits:

• 2002–2007 Subaru WRX Sedan & Wagon

• 2004 Subaru WRX STI

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

The ST X Coilover Kit is a direct-fit, fixed-damping suspension upgrade designed to enhance handling and stance for early-generation WRX and STI platforms. With factory-preset valving tuned for balanced performance and comfort, this kit delivers improved control and sharper response without the complexity of adjustable dampers.

Manufactured with galvanized steel strut housings for long-term corrosion resistance and reliability, the ST X offers an affordable performance suspension upgrade with noticeable results.

Lowering Range

• Front: ~0.8” – 2.0”

• Rear: ~0.8” – 2.0”

Adjustable lower height helps reduce body roll, improve turn-in, and refine overall handling.

Spring Rates (Verified for Part #13245004)

• Front: 400 lbs/in (~7.14 kg/mm)

• Rear: 285 lbs/in (~5.09 kg/mm)

These spring rates provide firmer control over stock suspension, delivering improved body control and responsiveness while maintaining street drivability.

Key Features

• Height Adjustable – Customize ride height with ease

• Factory Pre-Set Damping – Balanced performance and ride quality

• Twin-Tube Damper Design – Controlled response without harshness

• Galvanized Steel Construction – Enhanced corrosion protection

• Direct Bolt-On Fitment – Designed specifically for 02–07 WRX and 04 STI

Performance Benefits

• Reduced body roll and improved cornering stability

• Sharper steering feedback and confidence-inspiring suspension feel

• Lowered stance for improved aesthetics and performance

• Reliable street performance with a comfortable daily ride

Why Choose ST X for Your WRX/STI?

If you want a simple, effective suspension upgrade that enhances handling and stance without adjustable damping, the ST X is an excellent choice — offering performance gains over stock with durable German-engineered components.