If you’re looking to dial in your ride height without committing to a full coilover setup, the KW H.A.S (Height Adjustable Spring) kit is a solid choice. Unlike those conventional lowering springs that lock you into one height, this kit lets you tweak your suspension even after it’s installed. So whether you want to slam it down for a show or raise it up for a weekend off-road adventure, you’ve got options.

One of the coolest things about the KW H.A.S. system is how it transforms not just the look of your car, but the way it drives. The steering becomes more responsive, making your daily drives feel a bit sportier. And if you’ve got a vehicle with factory adaptive or electronic suspension, don’t worry—this kit plays nice with all those driver assistance features you love. Everything works together seamlessly, so you won’t lose any of that comfort or functionality.

KW doesn’t cut corners when it comes to materials, either. The springs are crafted from high-quality chrome-silicon steel, specifically tuned for your car’s original dampers and wheel load. That means you’re not just getting a generic spring; you’re getting something that’s been engineered to fit your vehicle like a glove. Plus, each kit comes with vehicle-specific bump stops that have a dust protection system, which is a nice touch to keep your factory suspension safe from road grime and debris.

What’s also great about the KW H.A.S. kit is that it allows for continuous ride height adjustments within a tested range. Traditional lowering springs can’t do that, so you’re getting a lot more flexibility here. The dust protection elements and spring perches included in the kit are designed to maximize lowering, but they won’t compromise your factory dampers in the process.

In short, if you want your car to look good and handle even better, the KW H.A.S. kit is worth considering. Our engineers put in the work, testing these setups on the legendary Nürburgring Nordschleife and in our KW 7-post Driving Dynamic Test Center to ensure they perform at their best.

• Compatible with vehicles that have or don’t have electronic suspension.
• High-strength, multi-coated chrome-silicon steel springs designed for durability and tuned for each specific vehicle.
• Comes with a limited lifetime warranty—no mileage restrictions.
• Preserves the functionality of your factory electronic suspension.
• Allows precise ride height adjustments, corner by corner, down to the millimeter.
• Achieves a sporty driving experience without sacrificing the dynamics you expect from performance vehicles, thanks to tailored spring rates.

• Color options: Yellow, Purple
• Finish: Powder Coated for extra durability
• Material: Chrome-Silicon Steel

• BMW 840i xDrive Gran Coupe Base (2020-2021)
• BMW M850i xDrive Gran Coupe Base (2021-2023)

So if you’re rocking a BMW 840i or M850i, the KW Suspension Height Adjustable Spring Kit (part number 253200EA) could be just what you need to elevate your ride—literally and figuratively.