The ST X coilover kit delivers height-adjustable suspension for the 8V Audi A3 and S3 Quattro, tuned to balance sportier handling with daily-driver road comfort. Dampers are application-specific, valved by KW's vehicle-dynamics engineering and built by hand in Germany. The kit uses galvanized zinc-coated steel struts and a friction-optimized polyamide composite spring perch with a stainless-steel insert for corrosion-resistant, long-lasting ride-height adjustment.
| Type | Coilover kit (ST X) |
| Adjustability | Ride height |
| Damping | Fixed |
| Construction | Galvanized zinc-coated steel strut housing |
| Part Number | 1321000M |
| Warranty | 5-year limited, unlimited mileage |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2019 | Audi | A3 Quattro | Premium |
| 2015-2019 | Audi | A3 Quattro | Premium Plus |
| 2015-2019 | Audi | A3 Quattro | Prestige |
| 2020 | Audi | S3 | Premium |
| 2015-2020 | Audi | S3 | Premium Plus |
| 2015-2019 | Audi | S3 | Prestige |
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.
