AST Lowering Springs For BMW 4 420i/430i/420D 07/2020-, Front 40 , Rear 40
Description
The AST Lowering Springs for BMW 4 420i/430i/420D (07/2020-) are engineered to provide a precise reduction in ride height while maintaining the driving comfort expected from OEM components. Manufactured using advanced cold-coiling technology on premium Wafios machines, these springs ensure consistent quality and durability. Designed specifically for the front and rear suspension, with a lowering of 40 mm each, they effectively lower the vehicle’s center of gravity, enhancing handling dynamics and stability without compromising everyday usability.
These springs offer a progressive spring rate, allowing for a smooth transition in suspension stiffness that balances performance improvements with ride comfort. The materials and manufacturing processes meet rigorous standards to guarantee longevity, supported by a lifetime warranty against breakage. This assurance reflects AST’s commitment to reliability and customer satisfaction.
AST Lowering Springs are a direct replacement for the original springs, tailored for the specific vehicle model. They provide a refined driving experience by reducing body roll and improving cornering response, making them suitable for both daily driving and spirited performance situations. Their compatibility extends across a wide range of vehicles, with precise engineering to fit the BMW 4 Series models specified.
Notes
- Not suitable for 4WD (four-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: 40 mm
- Rear lowering: 40 mm
- Progressive spring rate for balanced comfort and performance
- Cold-coiled using advanced Wafios machinery for precision and durability
- Lifetime warranty against breakage
Compatibility
- Designed specifically for BMW 4 Series 420i, 430i, and 420D models from 07/2020 onward
- Direct OEM spring replacement
- Not compatible with four-wheel drive vehicles
- Adjustments in lowering height for M-sport and Adaptive M-sport suspensions
Will it fit my car?
We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.
Shipping
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Tracking Information:
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Returns/Warranty
Eligibility:
All return eligibility will be specific to the vendor.
Return & Refund Process:
To initiate a return, please contact the vendor you purchased the product from with your order number and reason for return. Their team will provide further instructions.