AST Lowering Springs For BMW 3 4CYL. 10/1999-09/2005, Front 50 , Rear 40

The AST Lowering Springs are engineered specifically for BMW 3 4CYL models produced between 10/1999 and 09/2005, providing a precise fit and reliable performance. Manufactured using advanced Wafios coiling machines, these cold-coiled springs ensure exceptional quality and durability. Designed to lower the vehicle’s center of gravity, they improve handling and stability without compromising the comfort typically expected from OEM springs.

These springs offer a progressive spring rate that balances enhanced driving dynamics with ride comfort, making them an ideal upgrade for drivers seeking improved road feel and control. The front springs lower the vehicle by 50 mm, while the rear springs provide a 40 mm drop, resulting in a sportier stance and optimized weight distribution. Each set is tailored to the vehicle’s specifications to maintain OEM-level reliability and safety standards.

AST’s commitment to quality is reflected in the lifetime warranty against breaking, underscoring the brand’s confidence in their product’s longevity and structural integrity. These lowering springs are suitable for a wide range of driving conditions and are designed to integrate seamlessly with the vehicle’s existing suspension components.

Lowering Specifications

• Front drop: 50 mm
• Rear drop: 40 mm
• Progressive spring rate for balanced comfort and performance
• Cold-coiled on Wafios machines for precision and durability
• Lifetime warranty against breaking

Compatibility

• BMW 3 Series 4-cylinder models
• Production years: 10/1999 - 09/2005
• Direct replacement for OEM springs
• Compatible with original suspension components
• Designed for enhanced handling without sacrificing ride comfort

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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.

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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.