Mercedes-Benz C-Class AMG C 43 Coilover Suspension Kit - KW - KW H.A.S. - `17-`21. This KW H.A.S. height-adjustable spring kit replaces fixed lowering springs and lets you set ride height after installation, engineered specifically for the W205 AMG C43.

The KW H.A.S. system gives drivers millimeter-precise ride height adjustment while preserving the functionality of factory adaptive or electronic dampers. KW uses chrome-silicon steel springs with vehicle-specific spring rates matched to OE damper characteristics, so you get a more controlled, sporty response without compromising driver assistance or comfort systems. The kit includes application-specific bump stops and dust protection to reduce wear from road debris. Developed and tested by KW in Germany, these height-adjustable springs allow continuous adjustment within the tested range and are a practical alternative to conventional lowering springs.

Features

• Fitment: 2017–2021 Mercedes‑Benz C‑Class AMG C43 (W205) Sedan & Coupe
• KW H.A.S. height adjuster for on-car ride height changes
• Compatible with factory electronic/adaptive or regular dampers
• High-strength chrome‑silicon steel springs with vehicle-specific rates
• Includes bump stops and dust protection elements
• Developed and tested by KW in Germany; Limited Lifetime Warranty

If you have questions or want help confirming fitment, call us directly — 512-982-9393 (TX) or 562-981-6800 (CA). We have two installation and customization locations in Austin, Texas and the Los Angeles, California area where we perform on-premises installation. If you are considering purchasing multiple items, contact us for possible shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov