The ST XA coilover kit is a height-adjustable suspension system for the 1996-2002 BMW Z3 Coupe and Roadster (non-M), built by hand by KW in Germany. It pairs a wide ride-height adjustment range with 16 clicks of adjustable rebound damping, letting you dial in the look and tune driving dynamics from comfort to sport with a turn of the knob. Galvanized zinc-coated steel struts and a friction-optimized polyamide composite spring perch with a stainless-steel insert provide corrosion resistance and long-lasting height adjustability. Each kit ships preset to KW's dyno-verified factory damper settings and includes a detailed setup manual.
| Type | Coilover kit (ST XA) |
| Adjustability | Ride height + damping |
| Damping | 16-click adjustable rebound |
| Construction | Galvanized zinc-coated steel |
| Part Number | 18220016 |
| Warranty | 5-year limited, unlimited mileage |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2002 | BMW | Z3 | Coupe |
| 1996-2002 | BMW | Z3 | Roadster |
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.
