
AST
AST Lowering Springs For BMW 4 xDRIVE 420i/428i/430i/420D xDRIVE 07/2013-10/2020, Front 30 , Rear 25
Choose options
The AST Lowering Springs are engineered specifically for BMW 4 xDRIVE models 420i, 428i, 430i, and 420D xDRIVE from 07/2013 to 10/2020. Manufactured with precision using the best Wafios coiling machines, these springs provide a reliable and high-quality solution to enhance your vehicle's driving dynamics.
Designed to lower the vehicle’s center of gravity by 30 mm at the front and 25 mm at the rear, these springs improve handling and stability without compromising the comfort typically expected from OEM springs. The cold-coiling process ensures durability and consistent performance, making them a dependable upgrade for your BMW.
AST Lowering Springs are a direct replacement for the original equipment springs, developed with vehicle-specific specifications to maintain optimal ride quality. Their progressive spring rate balances ride comfort with enhanced road grip, delivering a more engaging driving experience. The springs are made from premium materials, guaranteeing longevity and resistance to wear under various driving conditions.
With a comprehensive application range covering over 2500 vehicle models since 1966, AST has established a reputation for quality and reliability. These lowering springs come with a lifetime warranty against breakage, reflecting the brand’s commitment to customer satisfaction and product excellence.
Notes: Not suitable for 2WD (Two-Wheel Drive) cars.
Lowering Specifications
- Front lowering: 30 mm
- Rear lowering: 25 mm
Compatibility
- BMW 4 xDRIVE 420i (07/2013-10/2020)
- BMW 4 xDRIVE 428i (07/2013-10/2020)
- BMW 4 xDRIVE 430i (07/2013-10/2020)
- BMW 4 xDRIVE 420D (07/2013-10/2020)
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.