ST XA Adjustable Coilovers 12-18 BMW 3 Series F30 Sedan AWD

When you're looking to dial in the stance and handling of your 2017-2020 BMW 440i xDrive, the ST XA coilover kit is a solid option. This kit includes everything you need to lower your vehicle and fine-tune its driving dynamics. You get four complete coilovers, each featuring a galvanized zinc-coated steel housing for corrosion protection and a hardened chrome piston rod. The kit also comes with elastomer bump stops that have integrated dust protection systems to keep dirt and water away from the internal components, helping to maintain ride quality and durability over time. You'll also find adjustable spring perches made from a durable, friction-optimized polyamide composite with a stainless steel insert, designed to prevent corrosion and ensure long-lasting adjustability.

What really sets the ST XA coilovers apart is the ability to adjust both the ride height and the rebound damping. The spring perches use a unique trapezoidal thread pitch, making height adjustments straightforward. More importantly, you get 16 distinct clicks of adjustable rebound damping. This allows you to precisely control how your car feels on the road, whether you prefer a more comfortable ride or a sportier, more responsive feel. Each damper is tested on a shock dyno before it's boxed, ensuring it meets factory-recommended settings. A detailed manual is included to help you understand and reset the damper settings.

These coilovers are built by hand by the experts at KW in Germany. The galvanized steel housing offers improved resistance to corrosion, and the integrated dust protection system helps keep the internal components clean. ST Suspensions backs this kit with a 5-year limited warranty with unlimited mileage.