How much will these springs lower my BMW 545i?

These AST lowering springs are designed to lower your 2004-2005 BMW 545i by approximately 30mm in both the front and rear.

What is a progressive spring rate?

A progressive spring rate means the spring gets stiffer as it compresses. This design helps provide a comfortable ride during normal driving but offers more support when you need it, like during hard cornering or braking.

What does the lifetime warranty cover?

AST offers a lifetime warranty against breaking for these lowering springs. This means if a spring cracks or fails under normal use, AST will replace it.

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Trusted Since 1957

Est. 1957

Specifications

Brand: AST
Part #: ASTLS-14-433
UPC: ASTLS-14-433

AST 07/2003-03/2010 BMW 5 Lowering Springs - 30mm/30mm

Name: AST 07/2003-03/2010 BMW 5 Lowering Springs - 30mm/30mm
Brand: AST
SKU: ast-ast-07-2003-03-2010-bmw-5-lowering-springs-30mm-30mm-t14-707618
Price: 393.75 USD
Availability: BackOrder

$393.75

On Backorder

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

Fits 2004-2005 BMW 545i. AST Lowering Springs lower your car's center of gravity without sacrificing too much ride comfort.

Key Features

Direct fit — verified for 2004-2005 BMW 545i
Lower center of gravity — improves handling characteristics
Progressive spring rate — balances ride comfort and performance
Cold-coiled on Wafios machines — built for durability
Lifetime warranty against breaking — peace of mind for the road ahead

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About this part

Product Details

AST Lowering Springs drop your 2004-2005 BMW 545i by 30mm front and 30mm rear. These springs replace your stock ones to lower the car's center of gravity, which can improve handling. They're built to keep a good amount of the comfort you're used to from the original parts.

These springs are cold-coiled on Wafios machines, which are known for making well-built springs. They have a progressive design, meaning they get stiffer as they compress. This helps balance lowering the car with keeping a comfortable ride.