• ST Suspensions ST X Coilover Kit - 2003-2008 BMW Z4 2.5i 3.0i 6cyl (Z85)
  • ST Suspensions ST X Coilover Kit - 2003-2008 BMW Z4 2.5i 3.0i 6cyl (Z85)
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ST Suspensions ST X Coilover Kit - 2003-2008 BMW Z4 2.5i 3.0i 6cyl (Z85)

ST Suspensions ST X Coilover Kit - 2003-2008 BMW Z4 2.5i 3.0i 6cyl (Z85)

13220004

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$1,089.00 USD
$1,089.00 USD $1,089.00 USD
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The ST Suspensions ST X Coilover Kit for the 2003-2008 BMW Z4 models is a performance suspension upgrade designed to enhance handling and ride quality. Engineered for everyday driving, this coilover kit offers a balance of comfort and precise road-hugging performance. Constructed with durable materials, the kit features adjustable spring perches that allow for customizable ride height and stance. Its straightforward design ensures reliable performance and easy installation, making it suitable for drivers seeking improved handling without sacrificing daily comfort. The coilovers are engineered to provide consistent damping and stability, delivering a confident driving experience on various road conditions.

Designed specifically for the 2003-2008 BMW Z4 with 2.5i and 3.0i 6-cylinder engines, this coilover kit is a direct replacement for the factory suspension components. It is ideal for street use, track days, or spirited driving, offering adjustable height to suit individual preferences and driving styles. The kit includes all necessary components for installation, ensuring a seamless upgrade. Compatible with models within the specified years, the ST X Coilover Kit enhances both the appearance and performance of your vehicle, providing a tailored fit and improved handling dynamics for enthusiasts and daily drivers alike.

Overview

The ST X Coilover Suspension for the 2003-2008 BMW Z4 2.5i 3.0i 6cyl (Z85) was developed for the everyday driver who needs to hug the curves yet retain road comfort. Simple, uncomplicated road performance for those who just want to get in and drive. Add in our wide range of height adjustability; the ST X Coilover will look as perfect as it feels. ST X Coilover Kit deliver precise adjustment to your ride height and look of your car. We manufacture an adjustable spring perch made of durable and friction-optimized polyamide composite material with a stainless steel insert. Thanks to the composite material corrosion is prevented between the strut and perch ensuring long lasting height adjustability. Galvanized zinc coated steel struts optimize corrosion protection for long lasting use. We add a dust protection system to prevent unwanted dirt and particulate from coming in contact with the hardened chrome piston rod or getting into the valve packs.

We reinforce the system with a multi-layered pressure resistant sealing package, mono block guide system and a low friction piston band which works inside the pressure resistant internal damper housing. At ST suspensions we do not accept compromises. As a matter of principle we rely on world class engineering delivered from KW for all our dampers. Why? To simply improve your driving experience! All ST X Coilover Kit are application specific for your car and perfectly adapted for everyday life.

Improved driving dynamics and handling

Designed in conjunction with KW Suspension Germany, ST X Coilover Kit deliver a sporty handling by reducing the 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.

Standard Features

  • Individual lowering within the TUV-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
  • 5 year limited warranty
Specifications
Part Number 13220004
Part Name ST X Coilover Kit
UPC 00611512902043
Vehicle 2003-2008 BMW Z4 2.5i 3.0i 6cyl (Z85)
Front Lowering Rate 0.8 - 2.0 in.
Rear Lowering Rate 0.6 - 1.6 in.
Ride-Height Adjustable Yes
Damping Adjustable Yes
Front Spring Rates 5.09 Kg/mm (285 lbs/in)
Rear Spring Rates Progressive
Notes Wheel Spacers may be Necessary if using Stock Wheels and Tires.
Vehicle Fitment
  • 2003 BMW Z4 2.5i 3.0i 6cyl (Z85)
  • 2004 BMW Z4 2.5i 3.0i 6cyl (Z85)
  • 2005 BMW Z4 2.5i 3.0i 6cyl (Z85)
  • 2006 BMW Z4 2.5i 3.0i 6cyl (Z85)
  • 2007 BMW Z4 2.5i 3.0i 6cyl (Z85)
  • 2008 BMW Z4 2.5i 3.0i 6cyl (Z85)
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