The ST XA coilover kit gives Audi B9 owners full control over ride height plus 16-click adjustable rebound damping, letting you dial in anything from comfort to sport with a turn of the knob. Built by hand by KW in Germany on galvanized zinc-coated steel struts with a friction-optimized polyamide composite spring perch and stainless-steel insert for corrosion-free, long-lasting height adjustability. Each damper is shock-dyno tested and ships preset to ST's recommended baseline, with a damper setup manual included.
| Type | Coilover kit (ST XA) |
| Adjustability | Ride height + rebound damping |
| Damping | 16-click manual rebound |
| Construction | Galvanized zinc-coated steel, monotube |
| Lowering Range | 0.4in-1.4in |
| Part Number | 182100BH |
| Warranty | 5-year limited, unlimited mileage |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017-2023 | Audi | A4 Quattro | Premium |
| 2017-2023 | Audi | A4 Quattro | Premium Plus |
| 2017-2023 | Audi | A4 Quattro | Prestige |
| 2019-2020 | Audi | A4 Quattro | Ultra sport |
| 2018-2023 | Audi | A5 Quattro | Premium |
| 2018-2023 | Audi | A5 Quattro | Premium Plus |
| 2018-2023 | Audi | A5 Quattro | Prestige |
| 2019-2023 | Audi | S4 | Premium |
| 2018-2023 | Audi | S4 | Premium Plus |
| 2018-2023 | Audi | S4 | 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.
