AST Lowering Springs For BMW 4 M440i xDRIVE 07/2021-, Front 40 , Rear 40

The AST Lowering Springs for the BMW 4 M440i xDRIVE (07/2021-) represent a precise engineering solution designed to enhance vehicle dynamics by lowering the center of gravity without compromising the ride comfort associated with OEM springs. Manufactured using advanced cold-coiling techniques on state-of-the-art Wafios machines, these springs deliver consistent quality and durability. Their progressive spring rate ensures an optimal balance between sporty handling and everyday drivability, making them suitable for drivers seeking improved performance with reliable comfort.

Each set is tailored specifically for the BMW 4 M440i xDRIVE, ensuring perfect fitment and compatibility. The front and rear springs both provide a 40mm lowering, contributing to a more aggressive stance and improved aerodynamics. Crafted from premium materials, these springs undergo rigorous quality control and come with a lifetime warranty against breakage, underscoring the brand’s commitment to long-term reliability and customer satisfaction.

AST's extensive experience is reflected in the wide range of applications, covering over 2500 vehicle models from 1966 to the present, highlighting their expertise in suspension technology. The springs maintain a high level of comfort, minimizing the harshness often associated with lowered suspensions, making them ideal for both spirited driving and daily use.

Notes:

• Not suitable for 2WD (Two-Wheel Drive) cars.
• Approximately 10mm less lowering for vehicles equipped with M-sport suspension.
• Approximately 10mm less lowering for vehicles equipped with Adaptive M-sport suspension.

Lowering Specifications

• Front lowering: 40mm
• Rear lowering: 40mm
• Progressive spring design for balanced performance and comfort
• Cold-coiled on Wafios machines for superior precision and durability
• Lifetime warranty against breakage

Compatibility

• Designed specifically for BMW 4 M440i xDRIVE models from 07/2021 onwards
• Not compatible with two-wheel drive (2WD) vehicles
• Consideration for M-sport and Adaptive M-sport suspensions with adjusted lowering height