What is the main benefit of installing these lowering springs?

These springs lower your BMW 4 Series' center of gravity by 40mm front and rear. This can lead to improved handling and a sportier stance for your vehicle.

Will these springs make my car ride too stiff?

The springs feature a progressive design, which aims to balance a lower ride height with a comfortable ride. They are intended to preserve much of the comfort you're accustomed to from the original equipment manufacturer springs.

What does the lifetime warranty cover?

AST provides a lifetime warranty against breaking for these lowering springs. This ensures peace of mind regarding the durability of the springs themselves.

Specifications

Brand: AST
Part #: ASTLS-21-035
UPC: ASTLS-21-035

AST 07/2013-10/2020 BMW 4 Lowering Springs - 40mm/40mm

Name: AST 07/2013-10/2020 BMW 4 Lowering Springs - 40mm/40mm
Brand: AST
SKU: ast-ast-07-2013-10-2020-bmw-4-lowering-springs-40mm-40mm-t14-707555
Price: 320.58 USD
Availability: BackOrder

$320.58

On Backorder

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

AST 07/2013-10/2020 BMW 4 Lowering Springs - 40mm/40mm. Lowers your car's center of gravity while keeping a comfortable ride.

Key Features

Fits 2013-2020 BMW 4 Series (420i, 428i, 430i, 418D F32).
Lowers the vehicle's center of gravity by 40mm front and 40mm rear.
Progressive spring design balances ride height reduction with comfort.
Cold-coiled on Wafios coiling machines for consistent performance.
Direct replacement for OEM springs.
Backed by a lifetime warranty against breaking.

These AST Lowering Springs are specifically designed for BMW 4 Series models manufactured between July 2013 and October 2020, including the 420i, 428i, 430i, and 418D F32.

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About this part

Product Details

AST Lowering Springs for your 2013-2020 BMW 4 Series (models like 420i, 428i, 430i, and 418D) are designed to reduce your vehicle's center of gravity. These springs replace your factory ones directly, helping to improve handling by lowering the car's profile.

Crafted using Wafios coiling machines, these springs feature a progressive design. This means they offer a balance between lowering your car and maintaining a comfortable ride, similar to what you'd expect from original equipment. They are built from well-selected materials to ensure durability and performance for your specific BMW 4 Series model.

These springs are backed by a lifetime warranty against breaking, giving you confidence in their longevity. They are intended to fit your BMW 4 Series from July 2013 to October 2020.