July 2021

ST XTA plus 3 coilover for Mercedes-AMG A 45 4MATIC (V177): 3-way adjustable coilover with top mount available

The brand ST suspensions from KW automotive also develops various components for the sporty compact models from Mercedes-Benz. In addition to several wheel spacers, an ST coilover is now available for all Mercedes-AMG A 35 4MATIC, A 45 4MATIC+ and A 45 S 4MATIC+ of the V177-models. According to the technical parts certificate, a stepless lowering of up to 30 millimeters is possible. The ST XTA plus 3 differs from other height-adjustable coilovers in this price segment in its dampers. The suspension can be manually adjusted, separately in the high-speed and low-speed forces of the compression and rebound. Independently of this, the rebound can be further adjusted for individual suspension tuning. Besides, the top mounts enable the camber to be adjusted. As usual with all coilovers from ST suspensions, the ST XTA plus 3 can be customized on sporty compact models. Apart from spring coatings and individualized spring markings, several spring kits, which differ from each other in their rate and length, are optionally available. More at

Whether as a new car or a secondhand car, the sporty AMG compact models based on the current Mercedes-Benz A-Class are extremely popular in their segment, which is also reflected by the high demand for suspension components. The new 3-way adjustable ST XTA plus 3 coilover is now available for the three top models Mercedes-AMG A 35 4MATIC, Mercedes-AMG A 45 4MATIC+ and Mercedes-AMG A 45 S 4MATIC+. According to the technical parts certificate, the coilover allows a stepless lowering of 10 to 30 millimeters on the front axle and 5 to 30 millimeters on the sporty compact AMG.

The ST XTA plus 3 coilover disposes of adjustable top mounts on the front axle and linear racing springs. Additionally, the KW dampers used for ST suspensions are separately adjustable in high-speed and low-speed compression as well as in low-speed rebound. If desired, it is possible to manually adjust how the suspension dampens during different driving maneuvers and track conditions. By proceeding point-by-point, the shock absorbers can be adjusted very precisely so that the damping is taken into account when driving over long bumps, braking, starting off, and even turning in. This is set via a so-called low-speed compression needle valve. In contrast, the damping has to react much faster on uneven asphalt surfaces, transverse joints and cross grooves. This can equally be adjusted on the XTA plus 3 with 24 click steps via the high-speed compression valve. When the high-speed adjustment wheel is turned, the valve spring preload changes. If the compression valves are closed, the body roll is reduced even more, the handling becomes more direct, and the track stability is increased. The rolling comfort benefits from opened valves. Due to the KW valve technology used in the three-way adjustable dampers, there is no need for a reservoir any longer. Whereas the two compression valves can be adjusted in high-speed and low-speed with 24 clicks each, there are 16 click stages to choose from for the low-speed rebound. The rebound primarily influences the vehicle's connection to the road surface and its handling.

If desired, the ST XTA plus 3 coilover can be purchased for all Mercedes-AMG A 35 4MATIC, A 45 4MATIC+ and A 45 S 4MATIC+ (V177) with customized suspension components. For instance, there is a choice of 18 RAL colors for the mainsprings. The coating as well as the individual spring marking can be ordered in the ST online store or from specialist dealers. Furthermore, an individual signature can be applied. Various spring kits, which differ in their rate and length, are optionally available for the ST XTA plus 3 coilover for the Mercedes-AMG. They are especially suitable for enthusiasts who would like to further individualize the handling of their suspension. More at

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About KW automotive:

The KW entrepreneurial group includes the suspension manufacturer KW automotive with its brands KW suspensions, ST suspensions, ap Sportfahrwerke, as well as the SimRacing brands TrackTime and Ascher Racing. With its immense suspension portfolio, state-of-the-art production technology and its development and test center, KW successfully operates in all markets for more than 25 years. Over the past years, KW automotive has developed over 16 distinct damping technologies in order to fulfill its own requirement of supplying "the perfect suspension for every demand". Beside its core business, the development and production of manually and adaptively adjustable coilover kits and other suspension components for the aftermarket as well as the range of accessories of various automobile manufacturers in the premium segment, the business field of original equipment for special models and super sports cars of the automotive industry is developing tremendously positively for the Swabian suspension manufacturer. Since KW is a development partner of sophisticated controlled suspension systems, the manufacturer disposes of the entire product portfolio of hydraulics, electronics, sensor technology, control units and damper control systems as well as the necessary know-how for the application and tuning of complex vehicle performance systems from a single source. KW has become an indispensable part of customer motor sports throughout the past years and produces homologated racing dampers and suspensions for a constantly growing number of racing cars of several manufacturers. Worldwide, successful racing teams rely on the patented valve technology of KW Competition suspensions. The entrepreneurial group has subsidiaries in the most significant markets, such as Belgium, Great Britain, China, Japan, Switzerland, Taiwan and the USA. Approximately 330 of closely 800 employees worldwide work at the headquarters in Fichtenberg. Software and hardware solutions are further business segments as well as events for virtual motor sports in the scope of the brand RaceRoom. Equally, the suspension manufacturers Belltech and Reiger Suspension as well as the alloy wheels manufacturer BBS are brands of the KW entrepreneurial group. The ST suspensions product range with springs, height adjustable springs, sports dampers, sports suspensions, coilovers, spacers and stabilizers combines leading KW technology for the road with the best price-performance ratio. In addition, the flexible manufacturing structure allows ST coilovers and ST height adjustable springs to be ordered customized.

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