ST Coilover Kit Audi A4 2WD (B9) Sedan

If you're looking to give your 2017-2020 Audi A4 a sportier stance and more responsive feel on the road, this ST X Coilover kit is a solid option. It's designed to offer a noticeable improvement in cornering grip and a lower ride height, all while keeping things comfortable enough for daily driving. You get a wide range of adjustment so you can dial in the exact look and feel you want for your A4.

ST Suspensions builds these coilovers with durability and performance in mind. The galvanized steel struts resist corrosion, and the spring perches are made from a tough polyamide composite with a stainless steel insert. This combination prevents corrosion between the strut and perch, making height adjustments smooth and reliable for years. Inside, the dampers are built by KW in Germany, known for their engineering expertise, ensuring consistent damping forces. They also include an integrated dust protection system to keep dirt and water away from the piston rod and seals, which helps maintain performance and longevity.

This kit is application-specific for your Audi A4, meaning the spring rates and damping are tuned to work well with your car's weight and dynamics. You'll find the ride height adjustment straightforward thanks to the unique thread pitch on the spring perch. Everything is built by hand and tested on a dyno to ensure it meets ST's standards before it ships out.