What is the drop height for these springs?

These AST lowering springs are designed to provide a 40mm drop for both the front and rear of your BMW 4 Series. This helps lower the vehicle's center of gravity.

Are these springs compatible with my stock shocks?

These springs are intended as a direct replacement for your OEM springs and are designed to work with your factory shock absorbers. However, for optimal performance and longevity, it's often recommended to pair lowering springs with performance-oriented or matched shocks.

What does the lifetime warranty cover?

AST offers a lifetime warranty on these lowering springs that covers breaking. This ensures peace of mind regarding the durability of the springs themselves.

Specifications

Brand: AST
Part #: ASTLS-21-037
UPC: ASTLS-21-037

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-t14-707558
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 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 07/2013-10/2020 BMW 4 Series.
Lowers vehicle center of gravity for improved handling.
Maintains a comfortable ride similar to OEM springs.
Progressive spring design balances ride height and performance.
Cold-coiled on Wafios coiling machines for precision.
Backed by a lifetime warranty against breaking.

These lowering springs are specifically designed for the 07/2013-10/2020 BMW 4 Series. Please verify fitment for your specific vehicle model and year.

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About this part

Product Details

If you're looking to give your 07/2013-10/2020 BMW 4 Series a more aggressive stance and improved handling, these AST Lowering Springs are a solid option. They're designed to directly replace your stock springs, lowering the vehicle's center of gravity without sacrificing too much of the comfortable ride you expect from the factory.

These springs are cold-coiled using Wafios coiling machines, which are known for their precision. The progressive design helps balance a lower ride height with better performance characteristics. This means you get a sportier look and feel, but the car remains manageable for daily driving. AST backs these springs with a lifetime warranty against breaking, so you can install them with confidence.