What is the difference between ST X, ST XA, ST XTA and ST XTA PLUS3?

ST X offers a fixed sporty damping with infinitely variable height adjustment. ST XA adds adjustable rebound damping. ST XTA also features a two-part racing spring system and adjustable Unibal top mounts for camber adjustment. The ST XTA PLUS3 is the flagship with 3-way damper adjustment (rebound, plus high- and low-speed compression).

How does ST Suspensions prevent the threads from seizing?

ST uses a combination of galvanised zinc-coated steel struts with durable, friction-optimised polyamide composite spring perches featuring a stainless-steel insert. This prevents galling and corrosion between the strut and the adjuster ring.

ST Suspensions

Q: Is ST Suspensions comparable in quality to KW?

Yes. ST Suspensions is an official brand of the KW Automotive Group. The damper technology, internal valve packs and quality tests on the Nürburgring come from the same source as KW, with ST opting for galvanised steel housings for an exceptionally sharp price-performance ratio.

ST Suspensions Coilover Kits (by KW)

Developed and engineered by the global experts of the KW Automotive Group. ST Suspensions combines proven German motorsport technology with maximum individuality. Whether you choose an entry-level sporty coilover kit or the absolute top tier with camber adjustment, at Wheels 'N Customs we supply and install the complete ST range.

ST

SUSPENSIONS

Key facts:
The ST Suspensions coilover programme (TÜV approved) consists of four unique lines. The ST X offers infinitely adjustable height for everyday comfort, the ST XA adds adjustable rebound damping, the ST XTA also features adjustable Unibal camber top mounts and the beastly ST XTA PLUS3 comes with 3-way adjustable damping. The housings are made from heavily galvanised steel with corrosion-resistant polyamide spring perches.

ST Suspensions strut housing and composite ring

1. The ST Suspensions Range Overview

ST X: Excitement from the start

The ST X is the ideal mix of sportiness, simplicity and road comfort. Developed for the daily driver who wants to attack corners sharply. Thanks to the wide, infinitely variable height adjustment you can fine-tune the stance and wheel fitment down to the millimetre.

ST XA: Adjustable Damping

For anyone who wants to influence more than just ride height. With extensively adjustable rebound damping (from KW) you tailor your car's handling for an even crisper response, without having to sacrifice comfort.

ST XTA: Your style, your suspension

The upgrade for the ambitious sporty driver. Equipped with a linear racing spring system, adjustable damping and adjustable aluminium Unibal camber top mounts. This allows you to adjust the camber angle on the front axle for maximum tyre grip on track or mountain passes.

ST XTA PLUS3: Maximum performance

Your entry into the top tier of driving dynamics. The most versatile ST coilover kit ever built. In addition to infinitely variable height and camber adjustment, it also offers independently and multiply adjustable high- and low-speed compression damping.

2. Materials & Comparison Table

ST Suspensions guarantees an extremely long service life thanks to thoughtful material choices from KW Automotive. Galvanised zinc-coated struts are used for maximum corrosion protection. The friction-optimised Polyamide Composite Spring Perches with a stainless-steel insert also prevent the adjuster ring from seizing on the threads in winter.

Coilover Type	Height Adjustment	Damping Adjustment	Top Mounts / Camber
ST X	Infinitely adjustable	Fixed sporty-yet-comfortable setting	Use of the original (OEM) top mounts
ST XA	Infinitely adjustable	Extensively adjustable rebound (extension)	Use of the original (OEM) top mounts
ST XTA	Infinitely adjustable	Adjustable rebound + two-part racing spring system	Adjustable aluminium Unibal top mounts (Camber)
ST XTA PLUS3	Infinitely adjustable	3-way (Rebound + High- and Low-Speed Compression)	Adjustable aluminium Unibal top mounts (Camber)

Installation of your ST Suspension Coilover Kit

€ 356,- to € 488,- incl. VAT

The price above concerns the indicative labour for installing the coilover suspension only and includes 3D wheel alignment of your vehicle after installation.

Note: The exact installation hours depend on the vehicle, the condition of the suspension and whether top mounts/camber plates need to be adjusted. Hours are billed afterwards. Your vehicle must always stay with us for at least 1 working day for installation. If the suspension needs to be coded out via software (electronically), additional costs may apply.

3. Frequently Asked Questions (FAQ)

Is ST Suspensions comparable in quality to KW?

Yes, absolutely. ST Suspensions is an official brand of the KW Automotive Group. The internal damper technology, the valve packs and the rigorous quality and safety tests on the Nürburgring come from the same high-end source as KW. While KW Inox-line opts for a stainless-steel outer housing, ST chooses galvanised steel housings for an exceptionally sharp price-performance ratio.

What is the benefit of the Unibal top mounts on the ST XTA and XTA PLUS3?

With the robust aluminium Unibal top mounts you can precisely adjust the camber angle (the inclination / negative camber of the wheel) on the front axle. This significantly increases the tyre contact patch in fast corners for maximum grip (track days) and also allows a more 'aggressive' fitment of wide wheels within the wheel arch.

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Request a No-Obligation Quote

Interested in an ST coilover kit (such as the X, XA or XTA) for your car? Then please complete the form below (always include your number plate or car model). We will soon send you a tailored quote and will be happy to schedule the installation with you.