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ST X Coilovers Galvanized Steel (Fixed Damping) - M135i, M140i, M235i, M240i, 335i, 340i, 435i & 440i

ST X Coilovers Galvanized Steel (Fixed Damping) - M135i, M140i, M235i, M240i, 335i, 340i, 435i & 440i

Regular price $2,039.00 AUD
Regular price Sale price $2,039.00 AUD
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Choose the right components for your vehicle from one of the largest delivery programs for high-quality suspension products. At ST suspensions, you will get the matching springs, the perfect wheel spacers, level adjusting lift kits, sport suspensions, tailor-made anti-sway bars or coilover kits at an attractive price. The best part: all ST suspension products are manufactured in the well-known high KW-quality.


Adjustable front lowering 25-50 mm
Adjustable rear lowering 30-55 mm
Axle load front 951-1,090kg
Axle load rear -1,230kg
Damping adjustment Fix damper setting (no adjustment)

Suitable for F20 120i, 125i (B48), M135i & M140i Hatch, F22 M235i & M240i Coupe, F23 220i, 228i, 230i, M235i & M240i Convertible, F30 320i, 330i, 335i & 340i Sedan and F32 435i & 440i Coupe models without Electronic Damper Control (EDC) suspension. Not for F31 3 Series Touring, F34 3 Series GT, F33 4 Series Convertible or F36 4 Series Gran Coupe.

Cars with Electronic Damper Control (EDC) require an additional front sway bar link which is optionally available to order with this kit. The KW Cancellation kit for electronic damping is also required for cars fitted with factory EDC.

Please contact us before ordering if you are unsure if this kit is suitable for your vehicle.

Sway bar kit is $150
About ST X Coilovers Galvanized Steel (Fixed Damping)

Need to get low? ST coilovers feature a continuous thread construction for height adjustment from moderate to eXtreme! Each coilover is manufactured by KW Automotive and their expertise and know how ensures maximum quality and fantastic driving dynamics.

Once installed, the ST X coilover can be easily adjusted using a polyamide ring on the galvanized, multiple-sealed strut. Adjustment is different for each car, but typically you can expect between 35 and 65mm of lowering on both the front and rear axles. For lowered cars as standard (such as the BMW E9x 3-series) the ST X coilover features a range of 30 to 60mm (front axle) and 25-55mm (rear axle).

Improved driving dynamics and handling

Designed in conjunction with KW Germany, ST X coilovers deliver a sporty handling by reducing the car's bodyroll during compression as well as improving agility when driving fast. The high-quality production of each ST X coilover includes a low-friction and pressure resistant housing alongside a chrome-plated piston rod for maximum longevity. A mono block guide and ST seal package ensures the twin-tube dampers remain free of dirt particles in all weather conditions.

Lowering with STyle: the ST X coilovers

  • Individual lowering within the tested adjustment range.
  • Front and rear axle thread adjustment (when possible).
  • Galvanized coilover struts with additional coating for optimized corrosion protection.
  • Complete solution with adjustable spring plate, race spring system and bumpers with dust protection.
  • Powerful twin-tube dampers with high-quality components for maximum longevity.
  • 1 Series / F20 (2012-2019) / M140i
  • 1 Series / F20 (2012-2019) / M135i
  • 1 Series / F20 (2012-2019) / 125i
  • 1 Series / F20 (2012-2019) / 120i
  • 2 Series / F22 / F23 (2014-2021) / M240i
  • 2 Series / F22 / F23 (2014-2021) / M235i
  • 2 Series / F22 / F23 (2014-2021) / 230i
  • 2 Series / F22 / F23 (2014-2021) / 228i
  • 2 Series / F22 / F23 (2014-2021) / 220i
  • 3 Series / F30 / F31 / F34 (2012-2018) / 340i
  • 3 Series / F30 / F31 / F34 (2012-2018) / 335i
  • 3 Series / F30 / F31 / F34 (2012-2018) / 330i
  • 3 Series / F30 / F31 / F34 (2012-2018) / 320i
  • 4 Series / F32 / F33 / F36 (2014-2020) / 440i
  • 4 Series / F32 / F33 / F36 (2014-2020) / 435i