AST Lowering Springs For BMW 4 420D/430D xDRIVE 07/2021-, Front 30 , Rear 30

The AST Lowering Springs for BMW 4 420D/430D xDRIVE 07/2021- represent a high-quality solution designed to enhance your vehicle’s performance by lowering its center of gravity while maintaining a commendable level of comfort. Manufactured with precision using the finest Wafios coiling machines, these springs are cold-coiled to ensure durability and reliability under demanding driving conditions. Their progressive spring design allows for a balanced reduction in ride height—30 mm at the front and 30 mm at the rear—improving handling and stability without compromising the driving experience you expect from OEM components.

Each set is engineered specifically for the BMW 4 Series 420D and 430D xDRIVE models from July 2021 onwards, ensuring perfect fitment and optimal performance. The AST Lowering Springs are a direct replacement for the original springs, providing a seamless upgrade that integrates flawlessly with your vehicle’s suspension system. Their robust construction and progressive coil design contribute to enhanced road grip and cornering capabilities, making them ideal for drivers seeking improved dynamics without sacrificing ride quality.

AST offers a lifetime warranty against breaking, reflecting the confidence in the quality and longevity of these springs. This warranty provides peace of mind, assuring you that your investment is protected over the long term. Additionally, the springs are suitable for a wide range of applications, with compatibility extending across more than 2500 vehicle models from 1966 to the present, underscoring AST’s expertise in suspension technology.

Notes:

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

Lowering Specifications

• Front lowering: 30 mm
• Rear lowering: 30 mm
• Progressive coil design for balanced ride height reduction
• Cold-coiled using advanced Wafios machinery for enhanced durability
• Maintains comfort levels comparable to OEM springs

Compatibility

• Designed specifically for BMW 4 Series 420D/430D xDRIVE models from 07/2021 onward
• Not compatible with Two-Wheel Drive (2WD) vehicles
• Adjustments in lowering height for M-sport and Adaptive M-sport suspension variants
• Fits a broad range of vehicles, with over 2500 models supported by AST lowering springs