KW H.A.S. 2015 BMW M4 (F82) / M3 (F80)

If you're looking to lower your 2016-2021 BMW M2, M3 (2015-2018), or M4 (2015-2020) and want more flexibility than traditional lowering springs, the KW Height Adjustable Spring (H.A.S.) kit is a solid option. This system lets you dial in your ride height precisely, even after installation, giving your performance car a more aggressive stance without sacrificing its handling characteristics.

KW builds these kits using high-strength chrome-silicon steel springs, rate-matched specifically to your vehicle's factory dampers and wheel loads. This ensures they work harmoniously with your car's original suspension, keeping the steering responsive and the overall driving behavior more agile. A key benefit is that all factory electronic suspension systems and driver assistance features remain fully operational. The kit also includes vehicle-specific bump stops and dust protection to help guard your OE suspension components against road debris.

Unlike standard lowering springs that offer a fixed drop, the KW H.A.S. system allows for continuous ride height adjustment within a tested range, typically limited by the factory dampers. This means you can achieve a sporty, balanced look and feel, with the confidence that KW's extensive testing on the Nurburgring and in their 7-post driving dynamics center backs up the performance. This kit is a great way to get a custom look and feel while retaining the functionality of your BMW's advanced suspension.