Will these springs make my car ride too stiff?

These AST springs use a progressive design. This means they aim to keep a comfortable ride similar to your original springs while still improving handling.

Do I need any other parts to install these springs?

Installation typically requires removing your original springs and installing these. It's recommended to consult the manufacturer's installation guide or a professional mechanic for specific tool and hardware requirements.

What does the lifetime warranty cover?

The lifetime warranty covers the springs against breaking. It ensures that the springs will not fail due to manufacturing defects for as long as you own the vehicle.

Specifications

Brand: AST
Part #: ASTLS-21-042
UPC: ASTLS-21-042

AST 03/2014-07/2021 BMW 4 Lowering Springs - 40mm/40mm

Name: AST 03/2014-07/2021 BMW 4 Lowering Springs - 40mm/40mm
Brand: AST
SKU: ast-ast-03-2014-07-2021-bmw-4-lowering-springs-40mm-40mm-t14-707568
Price: 329.28 USD
Availability: BackOrder

$329.28

On Backorder

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

Fits 2017-2020 BMW 440i Gran Coupe. AST Lowering Springs lower your vehicle's center of gravity without sacrificing much OEM comfort.

Key Features

Direct fit — verified for 2017-2020 BMW 440i Gran Coupe and 2015-2016 BMW 435i Gran Coupe
Lowers vehicle center of gravity — helps reduce body roll
Maintains OEM comfort — progressive design balances ride quality and performance
Cold-coiled on Wafios machines — well-built for consistent performance
Lifetime warranty against breaking — covers manufacturing defects

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About this part

Product Details

Already running a sportier setup on your 2017-2020 BMW 440i Gran Coupe? AST Lowering Springs are the next piece to further reduce your vehicle's center of gravity. These springs replace your factory ones directly and are built specifically for your car. They are cold-coiled on Wafios machines, a well-known brand for spring manufacturing.

These springs offer a progressive design, aiming to balance a lower ride height with improved handling. They are designed to maintain a comfortable ride, similar to what you'd expect from original equipment.