ST Coilover Kit 97-03 BMW 525i/528i/530i/540i E39 Sedan w/o Factory Air Suspension

The ST X Coilover suspension 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 XCoilover kits 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 kits are application specific for your car and perfectly adapted for everyday life. The ST X Coilover system is the ideal mix of sportiness and simplicity while still maintaining some comfort on the street. The wide range of ride height adjustability allows you to fine tune your tire and wheel fitments. ST Coilover Kits enable you to individually adjust the ride height of your car to improve the appearance and driving behavior. Depending on your selection, ST coilover kits offer a wide range of adjustments giving you the tools needed to dial them into your requirements. 1997-2003 BMW 5 Series (E39) Sedan 525i+528i+530i (6cyl) 540i (V8)

• Elastomer Bump stop with integrated dust protection system prevents water and dirt particles reaching the piston rod and seals. The highly resilient bump stops act as dynamic load limiters while maintaining ride quality and durability.
• Composite spring perch made from wear-resistant, friction-optimized polyamide composite with an embedded stainless-steel insert. The polyamide composite prevents oxidation while the stainless-steel insert maximizes strength.
• ST X coilovers are the ideal mix of sporty yet simple. The dampers and spring rate come tuned by our vehicle dynamics engineering in Germany to perfectly match each vehicle specific application.
• ST coilovers are built by hand by the experts at KW in Fichtenberg, Germany. Each damper is tested on a shock dyno to verify it's making the proper forces before being put into the ST box.
• Seamless Ride Height Adjustment - ST's composite spring perch and unique trapezoidal thread pitch make ride height adjustability a breeze so you can dial in your preferred look.
• Galvanized steel housing for improved resistance to corrosion.
• 5 Year Limited Warranty - Unlimited Mileage
• Made in Germany

The ST Suspensions coilover kit designed for 1997-2003 BMW E39 sedans offers a perfect blend of sportiness and everyday comfort. Engineered in Germany, this kit provides precise ride height adjustment, allowing enthusiasts to fine-tune their vehicle's stance and wheel fitment for a customized look. The system features a durable composite spring perch made from friction-optimized polyamide composite with an embedded stainless-steel insert, preventing oxidation and ensuring long-lasting performance. The galvanized steel housing enhances corrosion resistance, making it suitable for diverse driving conditions. Each damper is meticulously tested on a shock dyno at KW's facility in Fichtenberg, Germany, to guarantee optimal force application and durability, exemplifying the brand’s commitment to quality.
The coilover system incorporates a high-performance elastomer bump stop with integrated dust protection that shields the piston rod from dirt and water, preserving the integrity of the internal components. The internal damper design includes a multi-layered pressure-resistant sealing package, a mono block guide system, and a low-friction piston band, all working together to deliver a smooth and controlled ride. The seamless adjustment mechanism, featuring a trapezoidal thread pitch and composite spring perch, allows for straightforward ride height changes without compromising ride quality. Constructed with galvanized steel components, this kit ensures long-term resistance to corrosion and environmental wear.
Designed for specific BMW E39 models including 525i, 528i, 530i, and 540i, the ST coilovers are handcrafted by experts at KW and come with a five-year limited warranty for peace of mind. Whether you're seeking improved handling, enhanced appearance, or a tailored driving experience, these coilovers provide a reliable upgrade that maintains comfort while delivering sporty performance. Easy to install and adjust, the ST Suspensions coilover kit is an ideal choice for enthusiasts who demand high-quality engineering and a customizable ride experience.

Features:

• Adjustable ride height with seamless trapezoidal thread pitch for easy customization

• Durable composite spring perch made from polyamide composite with stainless-steel insert to prevent oxidation

• Galvanized zinc-coated steel struts for superior corrosion resistance

• High-performance elastomer bump stops with integrated dust protection system

• Manufactured and tested by KW in Germany to ensure quality and durability

• Multi-layered pressure-resistant sealing and low-friction piston band for smooth operation

• Compatible with specific BMW E39 models including 525i, 528i, 530i, and 540i

• Five-year limited warranty with unlimited mileage coverage

Fitment:
BMW 525i Base 2001
BMW 525i Base 2002
BMW 525i Base 2003
BMW 528i Base 1997
BMW 528i Base 1998
BMW 528i Base 1999
BMW 528i Base 2000
BMW 530i Base 2001
BMW 530i Base 2002
BMW 530i Base 2003
BMW 540i Base 1997
BMW 540i Base 1998
BMW 540i Base 1999
BMW 540i Base 2000
BMW 540i Base 2001
BMW 540i Base 2002
BMW 540i Base 2003