What is the main benefit of installing these lowering springs?

These AST lowering springs are designed to reduce your vehicle's center of gravity, which can lead to improved handling and a more aggressive stance. They aim to achieve this while maintaining a comfortable ride, similar to your original equipment manufacturer springs.

What is included with the AST Lowering Springs?

This product is a set of AST Lowering Springs. They are designed as a direct replacement for your vehicle's original springs. Hardware for installation is typically not included and may need to be sourced separately.

What kind of warranty do these springs come with?

AST provides a lifetime warranty against breaking for these lowering springs. This coverage offers assurance against manufacturing defects related to spring integrity.

Specifications

Brand: AST
Part #: ASTLS-21-032
UPC: ASTLS-21-032

AST 10/2013-10/2020 BMW 4 Lowering Springs - 35mm/30mm

Name: AST 10/2013-10/2020 BMW 4 Lowering Springs - 35mm/30mm
Brand: AST
SKU: ast-ast-10-2013-10-2020-bmw-4-lowering-springs-35mm-30mm-t14-707550
Price: 344.95 USD
Availability: BackOrder

$344.95

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

AST Lowering Springs for 2013-2020 BMW 4 Series. Lowers center of gravity 35mm front/30mm rear while maintaining comfort. Lifetime warranty.

Key Features

Fits 2013-2020 BMW 4 Series (420i, 428i, 430i, 420D F33).
Lowers vehicle center of gravity by approximately 35mm in the front and 30mm in the rear.
Progressive spring design balances ride comfort with improved handling characteristics.
Cold-coiled on Wafios coiling machines for precise manufacturing.
Direct replacement for OEM springs, simplifying installation.
Backed by a lifetime warranty against breaking.

These lowering springs are specifically designed for the 2013-2020 BMW 4 Series models, including the 420i, 428i, 430i, and 420D F33. Please verify fitment for your specific vehicle configuration.

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About this part

Product Details

If you're looking to give your 2013-2020 BMW 4 Series a more aggressive stance and improved handling, these AST Lowering Springs are a solid option. They're designed to reduce your vehicle's center of gravity, which can make a noticeable difference in how the car feels during spirited driving, all while aiming to keep the ride comfortable like the original parts.

These springs are cold-coiled on Wafios machines, a well-known brand for precision coiling, suggesting a well-built product. The progressive design means they offer a good balance – they'll lower your car by about 35mm in the front and 30mm in the rear, but they're engineered to work with your car's suspension to avoid a harsh ride. They're a direct replacement for your factory springs, making the installation process more straightforward.

With a lifetime warranty against breaking, AST stands behind these springs. This offers good peace of mind, especially when you're modifying your suspension. They're a popular choice for BMW 4 Series owners looking for that slightly lower look and feel without sacrificing too much daily drivability.