The ST X coilover kit is a height-adjustable suspension developed by ST suspensions (a KW Automotive brand) for the BMW E90/E92 xDrive 3-Series. Dampers are fixed-valved and application-tuned in Germany, paired with a friction-optimized polyamide composite spring perch with a stainless-steel insert and galvanized zinc-coated steel struts for corrosion protection. Each unit is hand-built and shock-dyno tested by KW in Fichtenberg, Germany.
| Type | Coilover kit (ST X) |
| Adjustability | Ride height |
| Damping | Fixed |
| Construction | Galvanized zinc-coated steel struts |
| Part Number | 13220048 |
| Warranty | 5-year limited, unlimited mileage |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006 | BMW | 325xi | Base |
| 2009-2013 | BMW | 328i xDrive | Base |
| 2007-2008 | BMW | 328xi | Base |
| 2006 | BMW | 330xi | Base |
Shipping: In-stock orders placed before 4 PM EST ship the same day, with standard, expedited, and overnight options available at checkout. Backordered items ship as soon as our distributor restocks — contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
