KW Height Adjustable Spring (H.A.S.) kit for the 2021-2026 Audi RS6 Avant and RS7 Sportback without air suspension. Unlike fixed lowering springs, the H.A.S. system lets you adjust ride height at each corner with millimeter precision even after installation, for a more dynamic stance and sharper steering response. Chrome-silicon steel springs are tuned to the factory adaptive dampers and wheel loads so all electronic suspension and driver-assist features stay fully operational, and vehicle-specific bump stops with a dust-protection system are included.
| Type | Height Adjustable Spring (H.A.S.) kit |
| Spring material | Chrome-silicon steel |
| Ride height | Continuously adjustable |
| Electronic suspension | Retained |
| Part Number | 253100CZ |
| Warranty | Limited lifetime, unlimited mileage |
Documents: Installation Instructions (PDF) | Installation Instructions 2 (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021-2023 | Audi | RS6 Avant | Base |
| 2025 | Audi | RS6 Avant | GT |
| 2024-2026 | Audi | RS6 Avant | Performance |
| 2021-2023 | Audi | RS7 Sportback | Base |
| 2024-2026 | Audi | RS7 Sportback | Performance |
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Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
