ST XA height- and rebound-adjustable coilover kit for the 2006-2013 BMW 3 Series (E90 sedan, E92 coupe, E93 convertible) — 325i, 328i, 330i, 335i and 335is. Ride height is set via a friction-optimized polyamide composite spring perch with a stainless-steel insert, and rebound damping adjusts across 16 clicks so you can tune from comfort to sport. Each kit is hand-built by KW in Fichtenberg, Germany, preset to factory-recommended dyno-tested settings, and shipped with a damper setup manual. Galvanized zinc-coated steel struts with multi-layer sealing and elastomer dust protection for long-term corrosion resistance.
| Type | Coilover kit (ST XA) |
| Adjustability | Ride height + rebound damping |
| Damping | 16-click manual rebound adjustment |
| Construction | Galvanized zinc-coated steel struts; polyamide composite spring perch with stainless-steel insert |
| Origin | Made in Germany (built by KW) |
| Warranty | 5-year limited, unlimited mileage |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006 | BMW | 325i | Base |
| 2007-2013 | BMW | 328i | Base |
| 2006 | BMW | 330i | Base |
| 2007-2013 | BMW | 335i | Base |
| 2011-2013 | BMW | 335is | Base |
