What is included in the ST X Coilover kit?

This kit includes all four corner suspension assemblies for your BMW E39 Sports Wagon. It is designed to be a complete replacement for your factory suspension, including the spring perches and dampers.

How do I adjust the ride height with these coilovers?

The ride height is adjusted using the composite spring perch and the unique trapezoidal thread pitch on the strut housing. This design makes it straightforward to dial in your preferred ride height for a custom look and stance.

Are these coilovers suitable for daily driving?

Yes, the ST X coilovers are designed to offer a sporty feel while maintaining road comfort for everyday use. The dampers and spring rates are specifically tuned by ST's engineers in Germany to match your BMW E39 wagon's application.

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Specifications

Brand: ST Suspensions
Part #: 13220036

ST Coilover Kit 99-03 BMW 525i/528i/540i E39 Sports Wagon w/Factory Air Suspension

Name: ST Coilover Kit 99-03 BMW 525i/528i/540i E39 Sports Wagon w/Factory Air Suspension
Brand: ST Suspensions
SKU: st-suspensions-st-coilover-kit-99-03-bmw-525i-528i-540i-e39-sports-wagon-w-facto-t14-192776
Price: 1337.15 USD
Availability: BackOrder

$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 1999-2003 BMW 5 Series E39 Sports Wagon. ST Coilover Kit for improved handling and adjustable ride height.

Key Features

Fits 1999-2003 BMW 5 Series E39 Sports Wagon with factory air suspension (525i, 528i, 540i).
Includes four corner assemblies for a complete suspension upgrade.
Galvanized steel housing provides improved resistance to corrosion.
Composite spring perch made from wear-resistant polyamide with a stainless-steel insert prevents oxidation and ensures strength.
Elastomer bump stops with integrated dust protection prevent dirt and water from reaching piston rods and seals.
Dampers and spring rates are tuned by engineers in Germany for each specific vehicle application.

⚠️ 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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About this part

Product Details

This ST X Coilover kit includes all four corner assemblies, ready to replace your stock suspension on your 1999-2003 BMW 5 Series E39 Sports Wagon, specifically models equipped with factory air suspension. These coilovers are built by hand in Germany by KW, a well-known name in performance suspension, and are designed to give you a sporty feel without sacrificing too much comfort for daily driving. You get a wide range of height adjustability, allowing you to dial in the perfect stance and tire fitment for your wagon.

The design focuses on long-term performance and ease of adjustment. The spring perches are made from a durable polyamide composite with a stainless steel insert, which helps prevent corrosion and makes adjusting your ride height smoother over time. The steel strut housings are galvanized for extra protection against rust, and they include an integrated dust protection system to keep dirt and debris away from the piston rod and seals. Inside, ST uses a multi-layered sealing package and a low-friction piston band for consistent damping performance.

These coilovers are tuned by ST's engineers in Germany to match your specific BMW E39 wagon application, balancing sporty handling with everyday drivability. The kit comes with a 5-year limited warranty with unlimited mileage, reflecting the confidence ST has in their German-made components.