The ST XA coilover kit gives you adjustable ride height plus 16-click rebound damping adjustment, letting you dial in everything from comfort to sport with a turn of the knob. Built by hand by KW in Fichtenberg, Germany, each damper is shock-dyno tested and ships preset to ST's recommended settings. Galvanized zinc-coated steel struts and a friction-optimized polyamide composite spring perch with a stainless-steel insert resist corrosion for long-lasting, smooth height adjustability.
Specifications
| Type | Coilover kit (ST XA) |
| Adjustability | Ride height + rebound damping |
| Damping | 16-click manual rebound adjustment |
| Construction | Galvanized zinc-coated steel, monoblock guide system |
| Part Number | 18271016 |
| Warranty | 5-year limited, unlimited mileage |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2012 | Porsche | Boxster | Base |
| 2008 | Porsche | Boxster | Limited Edition |
| 2008 | Porsche | Boxster | RS 60 Spyder |
| 2004-2012 | Porsche | Boxster | S |
| 2012 | Porsche | Boxster | S Black Edition |
| 2008 | Porsche | Boxster | S Limited Edition |
| 2009 | Porsche | Boxster | S Porsche Design 2 |
| 2004 | Porsche | Boxster | S Special Edition |
| 2011-2012 | Porsche | Boxster | Spyder |
| 2007-2012 | Porsche | Cayman | Base |
| 2012 | Porsche | Cayman | R |
| 2006-2012 | Porsche | Cayman | S |
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
