The ST X coilover kit is a height-adjustable suspension developed by ST suspensions for everyday drivers who want sharper handling without sacrificing ride comfort. Damping is fixed and tuned in Germany for this specific BMW xDrive (AWD) application, with springs and dampers built by hand and shock-dyno tested at KW in Fichtenberg. Ride height is set through a friction-optimized polyamide composite spring perch with a stainless-steel insert, while galvanized zinc-coated steel strut housings and an integrated dust-protection system guard against corrosion and contamination for long service life.
| Type | Coilover kit (ST X) |
| Adjustability | Ride height |
| Damping | Fixed |
| Construction | Galvanized zinc-coated steel strut housing |
| Warranty | 5-year limited, unlimited mileage |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2013-2018 | BMW | 320i xDrive | Base |
| 2014-2018 | BMW | 328d xDrive | Base |
| 2013-2016 | BMW | 328i xDrive | Base |
| 2017-2018 | BMW | 330i xDrive | Base |
| 2014-2016 | BMW | 428i xDrive | Base |
| 2017-2020 | BMW | 430i xDrive | Base |
