The AST Lowering Springs for BMW 4 420D/430D xDRIVE 07/2021- are engineered to enhance your vehicle’s driving dynamics by lowering the center of gravity while maintaining a high level of comfort. Manufactured using cold-coiling technology on the advanced Wafios coiling machines, these springs provide a precise fit and reliable performance tailored specifically for your BMW model.
Designed as a direct replacement for the OEM springs, the AST Lowering Springs offer a progressive spring rate that balances improved handling and ride quality. By lowering the vehicle by 40 mm at both the front and rear, these springs contribute to better road grip, reduced body roll, and a more responsive driving experience without compromising everyday comfort. Their robust construction ensures durability and consistent performance under various driving conditions.
AST’s commitment to quality is reflected in the lifetime warranty against breaking, providing assurance of long-term reliability. These springs have been developed with meticulous attention to detail, considering the specific suspension characteristics of the BMW 4 Series 420D/430D xDRIVE models from 07/2021 onwards. This ensures optimal compatibility and performance enhancement tailored to your vehicle’s design.
Please note that these lowering springs are not suitable for 2WD (Two-Wheel Drive) vehicles. Additionally, vehicles equipped with M-Sport or Adaptive M-Sport suspension systems will experience approximately 10 mm less lowering compared to standard suspension setups.
Lowering Specifications
- Front lowering: 40 mm
- Rear lowering: 40 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 420D xDRIVE (from 07/2021 onwards)
- BMW 4 Series 430D xDRIVE (from 07/2021 onwards)
- Not compatible with 2WD (Two-Wheel Drive) models
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.
It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.
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.
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.
All in stock products ship the same day if ordered before 2pm GMT
For out of stock items we will contact you with an estimated wait time if not otherwise specified above.
We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy
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.
PLEASE NOTE
- Orders with both in-stock and backorder or out-of-stock products will be dispatched once all products are available to ship together.
- Contact our sales team if you want your parts fitted to your vehicle at our London workshop.
- Shipping estimates are based on courier delivery times and don't include time to despatch from our warehouse.