AST Lowering Springs For BMW 4 435i/440i/430D 07/2013-10/2020, Front 30 , Rear 30

The AST Lowering Springs for BMW 4 Series 435i/440i/430D (07/2013-10/2020) are engineered to enhance your vehicle’s handling and aesthetic appeal by lowering the ride height precisely by 30 mm at both front and rear. Manufactured using advanced cold-coiling techniques on the finest Wafios coiling machines, these springs ensure superior quality, durability, and consistent performance. Designed as a direct replacement for the OEM springs, they maintain much of the original comfort while significantly improving the vehicle’s center of gravity, resulting in enhanced driving dynamics and stability.

Crafted from premium materials, the AST Lowering Springs incorporate a progressive spring rate that optimizes suspension response without compromising ride quality. This balance allows for improved cornering precision and reduced body roll, making them ideal for drivers seeking a refined yet sportier driving experience. The springs are extensively tested and tailored specifically for the BMW 4 Series models mentioned, guaranteeing compatibility and reliability. Additionally, AST offers a lifetime warranty against breaking, underscoring the brand’s commitment to quality and customer satisfaction.

These lowering springs are suitable for a wide range of applications within the BMW 4 Series lineup, providing a practical upgrade for enthusiasts and professionals alike. However, it is important to note that they are not compatible with 4WD vehicles. For models equipped with M-sport or Adaptive M-sport suspension, the lowering effect is approximately 10 mm less than standard, ensuring optimal integration with the vehicle’s existing suspension setup.

Lowering Specifications

• Front lowering: 30 mm
• Rear lowering: 30 mm
• Approximately 10 mm less lowering for vehicles with M-sport suspension
• Approximately 10 mm less lowering for vehicles with Adaptive M-sport suspension

Compatibility

• BMW 4 Series 435i (07/2013-10/2020)
• BMW 4 Series 440i (07/2013-10/2020)
• BMW 4 Series 430D (07/2013-10/2020)
• Not suitable for 4WD (four-wheel drive) vehicles

By choosing AST Lowering Springs, you invest in a product that combines engineering excellence with practical benefits, enhancing your BMW’s performance while maintaining a high level of comfort. This product represents a reliable solution for lowering your vehicle’s center of gravity, improving handling, and achieving a sportier stance without sacrificing everyday drivability.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

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We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

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All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.