Will these springs make my M4 ride too stiff?

AST aims to preserve comfort with a progressive spring design. While lowering springs generally result in a firmer ride than stock, these are developed to balance that with the comfort you're used to from OEM springs.

What is the warranty on these AST lowering springs?

AST Suspension offers a lifetime warranty against breaking on these lowering springs. This covers manufacturing defects for as long as you own the product.

Do I need any special tools to install these springs?

Installation of lowering springs typically requires a spring compressor tool and other standard suspension tools. Always refer to the manufacturer's installation instructions for specific tool requirements and procedures.

Specifications

Brand: AST
Part #: ASTLS-21-182
UPC: astASTLS-21-182

AST Suspension Lowering Springs - 2021+ BMW G82 M4 30mm/30mm

Name: AST Suspension Lowering Springs - 2021+ BMW G82 M4 30mm/30mm
Brand: AST
SKU: ast-ast-suspension-lowering-springs-2021-bmw-g82-m4-30mm-30mm-t14-472277
Price: 522.68 USD
Availability: BackOrder

$522.68

On Backorder — Expected to ship by May 29, 2026

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

Fits 2021-2024 BMW M4. AST Suspension Lowering Springs lower your car's center of gravity without sacrificing much of the comfort you're used to.

Key Features

Direct fit — verified for 2021-2024 BMW M4 and M440i xDrive.
Lowers center of gravity — improves handling by reducing body roll.
Progressive spring design — balances ride comfort with performance enhancement.
Cold-coiled on Wafios machines — ensures consistent spring rates and durability.
Lifetime warranty against breaking — covers manufacturing defects for the life of the product.

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Will it fit your car?

Fits these vehicles

BMW M4 2021-2024
BMW M440i xDrive 2021-2024

About this part

Product Details

Worn-out springs can affect handling and ride height. AST Suspension Lowering Springs are a direct fix for your 2021-2024 BMW M4. These springs are made to replace your factory ones and lower your car's center of gravity, aiming to keep a comfortable ride.

These springs are cold-coiled on Wafios coiling machines, which are known for precision. They are designed to give you a lower stance and improved handling without making the ride too harsh. The springs offer a 30mm drop front and rear.