AST Lowering Springs For BMW 4 420i/428i/430i/418D/420D/425D 03/2014-07/2021, Front 40 , Rear 40

The AST Lowering Springs are engineered to provide a precise reduction in your BMW's center of gravity, enhancing handling and stability without compromising the comfort typically experienced with OEM springs. Manufactured using state-of-the-art Wafios coiling machines, these springs are cold-coiled to ensure superior strength and durability. Designed specifically for BMW 4 Series models 420i, 428i, 430i, 418D, 420D, and 425D produced between 03/2014 and 07/2021, they offer a front and rear lowering of 40 mm, delivering a balanced and confident stance on the road.

AST’s commitment to quality is evident in the meticulous design and manufacturing process, resulting in a product that not only improves vehicle dynamics but also maintains ride comfort close to the original setup. These springs are a direct replacement for the OEM components and have been developed to meet the exact specifications of each vehicle model, ensuring seamless integration and reliable performance. The progressive spring design optimizes suspension behavior, offering enhanced cornering capabilities and reduced body roll, which contributes to a safer and more enjoyable driving experience.

With a broad application range covering over 2500 vehicle models from 1966 to the present, AST Lowering Springs are a trusted choice for automotive professionals and enthusiasts alike. The product is backed by a lifetime warranty against breaking, underscoring the brand’s confidence in the durability and long-term reliability of their springs. This warranty provides added assurance, making the AST Lowering Springs a sound investment for those seeking to improve their vehicle’s performance and aesthetics.

Notes

• Not suitable for 4WD (four-wheel drive) vehicles.
• Approximately 10 mm less lowering for vehicles equipped with M-sport suspension.
• Approximately 10 mm less lowering for vehicles equipped with Adaptive M-sport suspension.

Lowering Specifications

• Front lowering: 40 mm
• Rear lowering: 40 mm

Compatibility

• BMW 4 Series 420i (03/2014 - 07/2021)
• BMW 4 Series 428i (03/2014 - 07/2021)
• BMW 4 Series 430i (03/2014 - 07/2021)
• BMW 4 Series 418D (03/2014 - 07/2021)
• BMW 4 Series 420D (03/2014 - 07/2021)
• BMW 4 Series 425D (03/2014 - 07/2021)

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