AST Lowering Springs For BMW 5 540i/550i 07/2003-03/2010, Front 30 , Rear 30

The AST Lowering Springs for BMW 5 540i/550i (07/2003-03/2010) are expertly engineered to enhance your vehicle's driving dynamics by lowering the ride height by 30mm at both front and rear. Manufactured with precision on advanced Wafios coiling machines, these cold-coiled springs are designed to reduce the center of gravity while maintaining a high level of comfort comparable to the original equipment manufacturer (OEM) springs.

Constructed from premium materials, the AST Lowering Springs offer a progressive spring rate that balances improved handling and ride quality. This ensures that your BMW delivers a sportier stance and enhanced cornering stability without compromising everyday drivability. Each set is developed specifically for the vehicle model to guarantee a perfect fit and optimal performance.

With over 2500 applications covering vehicles from 1966 to the present, AST springs have a proven track record of reliability and quality. The product includes a lifetime warranty against breaking, underscoring the brand’s commitment to durability and customer satisfaction. These lowering springs are ideal for drivers seeking a refined suspension upgrade that respects OEM comfort standards while improving vehicle dynamics.

Please note that these springs are not suitable for vehicles equipped with level adjustment systems or four-wheel drive (4WD) configurations. Additionally, vehicles fitted with factory sports or M-Sport suspension systems will experience approximately 25mm less lowering than standard models.

Lowering Specifications

• Front lowering: 30mm
• Rear lowering: 30mm
• Progressive spring rate for balanced performance and comfort
• Cold-coiled using advanced Wafios machinery for precision and durability
• Lifetime warranty against breaking

Compatibility

• BMW 5 Series 540i/550i models from 07/2003 to 03/2010
• Not suitable for vehicles with level adjustment systems
• Not compatible with 4WD (four-wheel drive) vehicles
• Reduced lowering effect (approx. 25mm less) on vehicles with factory sports or M-Sport suspensions

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.