KW Automotive BMW G99 M5 Touring H.A.S Height Adjustable Spring Kit

Lower your BMW G90 M5 while retaining its factory adaptive dampers with the KW Automotive H.A.S Height Adjustable Spring Kit (253200GG). Developed specifically for the latest plug-in hybrid M5, the KW HAS system combines the simplicity of lowering springs with the ride-height adjustability normally associated with a complete coilover suspension.

Unlike conventional lowering springs that provide a predetermined drop, the KW Height Adjustable Spring Kit allows the G90 M5's ride height to be individually adjusted within a 5-20mm lowering range at both the front and rear axles. This gives you greater control over the vehicle's stance, allowing the factory wheel arch gap to be reduced according to your wheel setup and personal preference.

Crucially, the KW HAS kit is designed to work with the original BMW dampers, meaning the G90 M5's factory electronically controlled adaptive damping system remains functional. For owners who want to improve the stance of their M5 without moving to a complete aftermarket coilover system, the KW HAS kit provides an excellent middle ground.

Key Features

• KW Automotive H.A.S Height Adjustable Spring Kit
• KW part number 253200GG
• Developed specifically for the BMW G90 M5
• 5-20mm front lowering range
• 5-20mm rear lowering range
• Continuously adjustable ride height within the approved range
• Height adjustment at both front and rear axles
• Designed for use with the factory BMW dampers
• Retains the G90 M5's factory electronic adaptive damping
• Vehicle-specific spring rates
• High-quality chrome-silicon steel springs
• Designed around the G90 M5's specific axle weights
• Complete front and rear spring kit
• Parts type approval

What Is a KW H.A.S Height Adjustable Spring Kit?

KW H.A.S, or Height Adjustable Springs, provides an alternative to both traditional lowering springs and complete coilover suspension.

With a conventional lowering spring kit, the amount your BMW is lowered is largely predetermined by the spring design. KW HAS introduces adjustable spring perches, allowing the ride height to be changed within a vehicle-specific tested range.

This gives you the ability to fine-tune the stance in a similar way to a coilover system while continuing to use the vehicle's original dampers.

For the BMW G90 M5, this means you can achieve a more purposeful stance without removing the sophisticated factory adaptive damper system.

5-20mm Adjustable Lowering

The KW HAS kit provides a 5-20mm lowering range at both the front and rear, giving you considerably more flexibility than a traditional fixed-height lowering spring.

Front axle: 5-20mm lowering
Rear axle: 5-20mm lowering

This relatively subtle adjustment range is particularly well suited to the G90 M5. Owners can reduce the factory wheel arch gap without excessively lowering a large, heavy performance saloon that still needs to remain practical for everyday road use.

The adjustable design is also useful when fitting aftermarket wheels, allowing the final stance to be fine-tuned once your wheel and tyre setup is installed.

Retains the Factory Adaptive Dampers

One of the biggest advantages of choosing the KW HAS kit for the BMW G90 M5 is that it works in combination with the vehicle's original dampers.

The factory electronically controlled suspension remains active, so you retain BMW's original adaptive damping functionality and the ability to change the vehicle's suspension characteristics through its factory driving settings.

This differentiates the HAS system from a full coilover conversion such as the KW V4, where the original electronically controlled dampers are replaced.

For owners who are happy with BMW's factory adaptive damping but want an adjustable reduction in ride height, the KW HAS system is an ideal solution.

Vehicle-Specific Spring Rates

KW doesn't simply develop a generic lowering spring and adapt it across multiple applications.

The high-quality chrome-silicon steel springs used within each KW HAS kit feature vehicle-specific spring rates selected to work with the characteristics of the original suspension dampers and the vehicle's wheel loads.

This is particularly important on the G90 M5, which combines a twin-turbocharged V8, plug-in hybrid system and M xDrive all-wheel drive within a substantially heavier platform than previous generations of M5.

KW develops its spring rates to complement the different characteristics of the vehicle's adaptive standard suspension, providing a more direct and dynamic driving feel while retaining the functionality of the original damper system.

Designed Specifically for the BMW G90 M5

KW part number 253200GG is designed around the requirements of the latest G90-generation BMW M5.

The kit is suitable for the 4.4-litre V8 plug-in hybrid M5 with M xDrive, taking into account the substantial axle loads associated with the vehicle's high-performance hybrid drivetrain.

Maximum axle loads for this application are:

• Front axle: 1,475kg
• Rear axle: 1,550kg

The vehicle-specific development helps ensure the spring rates and adjustment range are correctly matched to the G90 M5 rather than simply providing a generic lowering solution.

KW HAS vs Conventional Lowering Springs

For G90 M5 owners comparing suspension options, the main advantage of KW HAS over conventional lowering springs is ride-height adjustability.

Traditional lowering springs provide a predetermined reduction in ride height. While straightforward and effective, you're ultimately limited to the drop determined by the spring manufacturer.

With KW HAS, you can adjust the final ride height within the approved 5-20mm range.

This provides several benefits:

• Fine-tune the amount of wheel arch gap
• Adjust the stance to suit different wheel and tyre combinations
• Choose between a subtle or more noticeable drop
• Fine-tune front and rear ride heights
• Retain the original electronically controlled dampers

It's an excellent option for owners who want more flexibility than standard lowering springs without moving to a complete aftermarket coilover setup.

KW HAS vs KW V4 Coilovers

Both KW suspension options are available for the G90 M5, but they are designed for different requirements.

The KW HAS Height Adjustable Spring Kit is best suited to owners who primarily want adjustable lowering while retaining the factory BMW adaptive dampers.

The KW V4 Coilover Kit replaces the factory dampers entirely and adds extensive independent rebound, low-speed compression and high-speed compression adjustment.

For a road-focused G90 M5 where maintaining factory electronic damping functionality is a priority, KW HAS offers a particularly attractive solution. Drivers looking for extensive control over both ride height and damping characteristics may instead prefer a complete KW V4 coilover system.

What's Included?

The KW H.A.S Height Adjustable Spring Kit is supplied as a complete front and rear package, including the vehicle-specific components required for the conversion.

The system incorporates:

• Front KW lowering springs
• Rear KW lowering springs
• Front and rear height adjustment components
• Vehicle-specific spring seats
• Matching elastomers and associated components where required
• Adapted dust protection components where applicable

The system is designed specifically for use with the factory BMW dampers.

Professional installation followed by a full suspension geometry alignment is recommended.

Compatibility

Designed for:

• BMW G90 M5 Saloon
• Model year: 07/2024 onwards
• Engine: 4.4-litre V8 Petrol/Electric Plug-in Hybrid
• Power: 535kW / 727PS
• Displacement: 4,395cc
• Drivetrain: M xDrive All-Wheel Drive
• Maximum front axle load: 1,475kg
• Maximum rear axle load: 1,550kg

Please check your vehicle's specification and permitted axle weights before ordering.

Product Specifications

Manufacturer: KW Automotive
Product: H.A.S Height Adjustable Spring Kit
Part Number: 253200GG
Front Lowering: 5-20mm
Rear Lowering: 5-20mm
Height Adjustment: Front & Rear
Factory Dampers Retained: Yes
Electronic Adaptive Damping Retained: Yes
Spring Material: Chrome-silicon steel
Approval: Parts type approval
Contents: Complete front and rear kit

Why Choose KW Automotive?

KW Automotive is one of the world's best-known manufacturers of performance suspension systems, with decades of experience developing suspension for everything from road-going BMW M cars to dedicated competition vehicles.

KW's Height Adjustable Spring range is specifically designed for enthusiasts who want to lower their vehicle while retaining sophisticated factory damper technology.

Rather than simply focusing on ride height, KW matches its spring rates to the specific vehicle, original dampers and axle loads. This makes the HAS range particularly relevant to modern performance cars such as the G90 M5, where electronically controlled suspension is an integral part of the vehicle.

Why Buy From R44 Performance?

R44 Performance specialises in BMW suspension, performance parts and modifications, with extensive experience across modern BMW M platforms including the latest G90 M5.

When you purchase your KW HAS G90 M5 suspension from R44 Performance, you'll benefit from:

• Genuine KW Automotive suspension products
• Specialist BMW G90 M5 product knowledge
• Expert advice when choosing between lowering springs, HAS and coilover systems
• Extensive range of complementary G90 M5 modifications
• Fast UK and worldwide shipping
• Secure, carefully packaged delivery
• Dedicated customer support before and after your purchase
• Trusted by BMW enthusiasts worldwide

For owners who want to lower their BMW G90 M5 while retaining the factory adaptive suspension, the KW Automotive H.A.S Height Adjustable Spring Kit 253200GG provides an ideal solution, combining 5-20mm adjustable lowering with vehicle-specific spring rates and full compatibility with the original electronically controlled dampers.

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