The E9x BMW 3-series built between 2005 and 2013 are currently some of the most popular pre-owned cars on the market, with sedan, station wagon, coupe and convertible body styles available. ST suspensions has an extensive suspension program available to cover all models including the 4WD X-Drive. The ST range includes; sport lowering springs, sport suspension kits, a choice of coilover kits, wheel spacers, sports anti-sway bars and even spring distance kits for the 3-series BMW. The ST suspensions line is developed by KW automotive in Germany to further enhance the already fantastic BMW driving dynamics and depending on the kit fitted, allows a German TÜV-tested and Autobahn approved lowering of up to 60mm from standard.
The popularity of the E9x 3-series range is paralleled by the coverage of the ST Suspensions tuning range. Three ST suspensions coilover kits are available for the sedan (E90), station wagon (E91), coupé (E92) and convertible (E93). All ST coilover kits are developed and manufactured by KW automotive to enhance the already excellent driving behaviour of the BMW 3-series. Drivers benefit from more direct handling characteristics and occupants will enjoy a high level of ride comfort. With ST Suspensions coilovers, the convertible (E93), sedan (E90) and station wagon (E91) can be lowered 30 – 60 mm at the front axle and 25 – 55 mm at the rear. The coupé (E92) already enjoys a lower ride height from factory, and the ST Coilover kit offers a German TÜV-tested adjustment range between 20 – 45 mm at the front and 20 – 40 mm on the rear axle. While the ST X, coilover suspension has a fixed damper setting the ST XA and ST XTA offers adjustable damping for a choice of a more comfortable or firmer ride characteristic. In addition to this, the ST XTA kit also allows top mount adjustable camber at the front axle. ST X coilovers are also available for the 3-series station wagon, the 3-series sedan and the 3-series coupé with xDrive and it allows user definable lowering of 15 – 45 mm at the front and 15 – 40 mm on the rear axle. All ST suspensions coilover kits use a low-friction and pressure-resistant damper housing as well as a chrome-plated piston rod.
More ST suspensions alternatives
To further improve driving dynamics, ST suspensions offer anti-sway bars for the front and rear axles. These minimize the wheel load difference between the inner and outer wheels in a corner to improve grip by sharing the load. This vastly improves the road holding when driving into corners and at rapid load changes. ST lowering springs offer a selection of either 30/20mm (front/rear), 30/30mm or 50/30mm lowering heights to get the look you desire. ST Suspensions matched spring and damper sport suspension kits for the E9x 3-series can allow lowering by 30/20 mm (front/rear), 30/30 mm and 50/30 mm. To assist drivers who use their touring or sedan to tow a trailer, the ST spring distance kits are the ideal accessory. Allowing a lift of 20 mm, they allow a level ride height even with a full load.
Ken Block partnership and clear ST price system
The recommended retail price of ST suspensions is easy to calculate with a simple structure. Vehicles are split into three price classes; “A” = compact class, “B” = middle class, “C” = high class and “S” = specials. For example, the price of ST coilovers for the BMW 3-series and BMW 1-series (all series including M3) is the same, because the cars fall into the same class. To raise awareness of ST Suspension outside of its native USA and onto the global stage, ST has enlisted the help of Ken Block. The Hoonigan Racing Division rally driver has an action packed year ahead with ST Suspensions. “ST offers an excellent product line and at the moment we are working on some very exciting projects,” said Ken Block.
Huge ST wheel spacer program
With the ST suspensions wheel spacers, it is easy to widen the track of your BMW by a wide range of widths to achieve your perfect stance. ST Suspensions offer a variety of fixing options to suit all needs. D1 fitment allows a 10 mm track increase (per axle) with through-hole system. This wheel spacer is centred through the precise centre spigot hole and provides true running directly on the wheel hub. D2 style fixing utilises ST’s double centring collar to allow hub centric spacing and is available for the E9x 3-series in 20, 25, 30, 35 and 40 mm while A1 fixing options are a bolt on version for vehicles with wheel bolts and allows wheel fitment via studs pressed into the spacer. A1 options are available in 40, 45, 50, 60 and 70 mm track increases. The recommended retail price of ST wheel spacers are between.
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