The three ST coilovers ST X, ST XA and ST XTA always allow the same stepless lowering within the context of the respective parts certificate. While the ST X does not have in rebound adjustable dampers, the ST XA and ST XTA coilovers feature dampers that can be set tighter or more comfortable with the integrated rebound adjustment. The adjustable dampers have a total of 16 click stages. In addition, the ST XTA front axle struts are always delivered with a two-stage racing sport spring system and aluminum top mounts. As far as it is possible due to the construction design, the top mounts of the XTA can be adjusted in camber and caster.
The ST and KW coilovers differ in quality and the used technologies, there are no congruent products. Most obvious is certainly the material used for the housings, which are KW-typically exclusively made of stainless steel or aluminum, while ST uses the common standard with galvanized steel housings. With the KW dampers exclusively used for ST, only the rebound damping forces of the ST XA and ST XTA can be set with 16 clicks.
All ST coilovers are manufactured directly at KW automotive in Fichtenberg (Germany).
Different single parts such as dampers, elastomer spring elements, struts, dust protection sleeves, springs, top mounts, etc.
The coilover suspension and the technical component report, installation documentation, spanner wrench for adjusting the lowering, mortise dial for adjusting the damping forces as well as the associated adjustment manual if the ST coilover suspension features adjustable damper.
At any car master workshop - regardless if it is a free workshop, an authorized repair shop, a tire workshop or a certified KW / ST specialist dealer.
ST Suspensions always recommend the setting of the specified track and camber values of the respective vehicle manufacturer for your car.
Wheel hub is not like wheel hub. Numerous automobile manufacturers use different dimensions and bolt circle patterns for the wheel mounting. For this reason, ST Suspension have developed a variety of spacer and attachment systems for a fast and safe assembly to provide track widenings for more than 90 percent of all registered vehicles.
Which wheel spacer system you need, depends mainly on the spacer width that you want to install. With DZX wheel spacers (through hole system with multi-hole circle) for example you can achieve a track widening of 5 to 25 mm in precise 2,5 mm steps per wheel. For a track widening of 20 to 35 mm per wheel, AZX screw-on system with hole circle bores is the ideal track widening for your vehicle. Both systems are suitable for vehicles with wheel bolts and wheel studs.
Due to many different wheel- / tire combinations that are possible for each vehicle, ST Suspension generally recommend to measure the maximum possible track widening directly on the vehicle.
Depending on the selected system, a set of ST wheel spacers contains: 2 spacers, matching adapter or hub centering rings, technical component report and installation instructions. At screw-on systems, also wheel bolts or wheel nuts are included for attaching the spacer to the wheel hub.
Thanks to the conical shape and the high-strength composite material of ST Suspension adapter rings, there is the advantage compared to conventional, mechanically produced aluminum wheel spacers that manufacturing tolerances of the wheel hub or rim can be compensated. So no vibrations can occur with DZX and AZX wheel spacers and a perfect wheel hub centering with a perfect fit is achieved! Also, the ST centering rings cannot fall out when changing the rims and there is no corrosion at the wheel hub connecting area.
The ST shaft nuts are available in different versions and lengths, so that almost all DZX spacers can be used on cars with studs.
When getting lowering springs you have to decide already before the purchase, which lowering you would like to reach. But with coilover springs, you can set a stepless lowering within the tested range, thanks to the threaded sleeves included in the scope of delivery.
The ST and KW coilover springs do not differ, only the KW coilover springs are offered for even more vehicles in the sports car and luxury car segment.
Within ST Suspension tested adjustment range, the ST coilover springs provide a sporty, harmonious driving behavior with sufficient residual driving comfort.
If you are only interested in a discreet lowering, the ST springs and ST coilover springs are the ideal product for you. With ST sport suspensions you ensure a moderate lowering on your vehicle with a sporty driving behavior. If you are looking for even more driving dynamics in combination with a maximum lowering, ST Suspension modern ST coilovers are the first choice for you.
ST Suspension springs are made of high-quality chrome-silicon material and are block-resistant even after installation. So they will not settle.
The most obvious difference is the possibility that you can choose a stepless lowering with a ST coilover suspension. This is not possible with a sports suspension. In addition, with ST coilovers, depending on the version, the dampers can also be set either firmer or more comfortable.
ST sport dampers are also available separately, without the matching ST springs. But like when changing the brake pads or brake discs, also the dampers, suspensions and springs should always be replaced axle-wise.
Not all ST anti sway bars have the possibility of a two-way or three-way adjustability. Whether the stabilizer is adjustable depends on the vehicle.
With the adjustability of the anti-sway bars, you can directly take influence on adjusting the spring characteristic tighter.
The installation position differs, depending on the vehicle.
Every lift kit comes with installation instruction
It depends on the respective axle geometry and vehicle weights, whether ST Suspension manufacture the lift kits from a resistant polyamide composite material or from an aluminum alloy.
The ST lift kits can only be combined with the standard suspension or a ST sport suspension; In exceptional cases, however, it is also possible with ST coilovers.