How do I adjust the ride height on these coilovers?

The ST X coilovers feature a composite spring perch with a unique trapezoidal thread pitch. This design makes adjusting your vehicle's ride height a straightforward process, allowing you to easily dial in your preferred stance.

What is the benefit of the composite spring perch material?

The spring perch is made from a durable, friction-optimized polyamide composite with an embedded stainless-steel insert. This material prevents oxidation and corrosion between the strut and perch, ensuring long-lasting and smooth height adjustability.

Are these coilovers made in Germany?

Yes, the ST X coilovers are built by hand by the experts at KW in Fichtenberg, Germany. Each damper is tested on a shock dyno to verify its performance before being packaged.

ST X-Height Adjustable Coilovers 11-15 Kia Optima TF - Excl. Hybrid

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Specifications

Brand: ST Suspensions
Part #: 13268003

ST X-Height Adjustable Coilovers 11-15 Kia Optima TF - Excl. Hybrid

Name: ST X-Height Adjustable Coilovers 11-15 Kia Optima TF - Excl. Hybrid
Brand: ST Suspensions
Price: 1337.15 USD
Availability: InStock

$1337.15

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2011-2015 Kia Optima. ST X-Height Adjustable Coilovers offer a sporty feel with road comfort and precise ride height adjustment.

Key Features

Fits 2011-2015 Kia Optima (TF) excl. Hybrid.
Galvanized steel housing offers improved resistance to corrosion.
Composite spring perch made from wear-resistant, friction-optimized polyamide with a stainless-steel insert prevents oxidation and maximizes strength.
Elastomer bump stop with integrated dust protection system keeps water and dirt particles away from the piston rod and seals.
Dampers and spring rates are tuned by vehicle dynamics engineers in Germany to match each specific vehicle application.
Ride height is seamlessly adjustable using the composite spring perch and unique trapezoidal thread pitch.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits this vehicle

Kia Optima 2011-2015

Product Details

ST Suspensions is known for making well-built suspension components, and their ST X Coilover kit for your 2011-2015 Kia Optima is a prime example. This kit is designed for drivers who want a more engaging driving experience on winding roads without sacrificing everyday comfort. You get a significant range of height adjustability, letting you dial in the perfect stance and look for your Optima.

What sets these coilovers apart is the attention to detail in their construction. The spring perches are made from a durable, friction-optimized polyamide composite with a stainless steel insert. This unique combination prevents corrosion between the strut and perch, ensuring that you can adjust your ride height smoothly for years to come. The steel struts themselves are galvanized and zinc-coated for solid corrosion protection, and they include an integrated dust protection system to keep dirt and water away from the hardened chrome piston rod and internal valve components. ST Suspensions also relies on KW's engineering for the damper tuning, ensuring each application is specifically matched to your Optima for an improved driving experience.

These coilovers are built by hand at KW's facility in Germany, and each damper is tested on a shock dyno before it's boxed. You'll find the ride height adjustment straightforward thanks to the composite spring perch and the specific trapezoidal thread pitch. This kit comes with elastomer bump stops that also act as a dust protection system, helping to maintain ride quality and durability.