ST XTA height- and rebound-adjustable coilover kit with unibal top mounts for the 2006-2013 BMW 3 Series (E90 sedan, E92 coupe, E93 convertible) — 325i, 328i, 330i, 335d, 335i and 335is. Ride height is set via a friction-optimized polyamide composite spring perch with a stainless-steel insert; rebound damping adjusts across 16 clicks; and aluminum unibal top mounts improve steering response and allow camber adjustment where applicable. Built by hand by KW in Fichtenberg, Germany, preset to factory-recommended dyno-tested settings, and shipped with a damper setup manual.
Specifications
| Type | Coilover kit (ST XTA) |
| Adjustability | Ride height + rebound damping |
| Damping | 16-click manual rebound adjustment |
| Top Mounts | Aluminum unibal (camber-adjustable where applicable) |
| Construction | Galvanized zinc-coated steel struts; polyamide composite spring perch with stainless-steel insert |
| Origin | Made in Germany (built by KW) |
| Part Number | 18220832 |
| 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 |
| 2009-2011 | BMW | 335d | Base |
| 2007-2013 | BMW | 335i | Base |
| 2011-2013 | BMW | 335is | Base |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
