
AST
AST Lowering Springs For BMW 4 xDRIVE 420D xDRIVE 03/2014-07/2021, Front 40 , Rear 35
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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
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.