Description
The AST Lowering Springs are engineered to enhance your BMW 4 xDRIVE 420D xDRIVE (03/2014-07/2021) by lowering its center of gravity, improving handling and stability without compromising ride comfort. Manufactured with precision on advanced Wafios coiling machines, these springs represent the highest standards of quality and reliability. Designed as a direct replacement for OEM springs, they ensure a seamless fit and maintain the integrity of your vehicle’s suspension system.
Constructed from premium materials, the AST springs feature a progressive coil design that balances performance enhancement with everyday comfort. Their front lowering specification of 40 mm and rear lowering of 35 mm effectively reduce body roll and improve cornering dynamics, providing a more responsive driving experience. These springs are suitable for a wide range of applications and have been developed specifically for over 2500 vehicle models since 1966, demonstrating their versatility and engineering excellence.
With a lifetime warranty against breaking, AST guarantees the durability and longevity of their lowering springs, giving you confidence and peace of mind on every journey. Please note that this product is not suitable for 2WD (Two-Wheel Drive) vehicles.
Lowering Specifications
- Front: 40 mm
- Rear: 35 mm
Compatibility
- BMW 4 xDRIVE 420D xDRIVE
- Model Years: 03/2014 – 07/2021
- Not suitable for 2WD vehicles


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