What is a linear spring rate?

A linear spring rate means the spring's resistance increases at a constant rate as it's compressed. This results in predictable suspension behavior, which is often preferred for performance driving.

What does the 61mm ID refer to?

The 61mm ID refers to the inner diameter of the spring. This measurement is crucial for ensuring the spring fits correctly onto the shock body or spring perch of your coilover assembly.

What is the benefit of a 140mm length spring?

The 140mm length is a common size for performance coilovers. It influences the amount of suspension travel and can affect ride height when used with adjustable coilovers.

AST Linear Race Spring 140mm 320 N/mm 61mm ID AST-140-320-61

Name: AST Linear Race Springs - 140mm Length x 320 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-140mm-length-x-320-n-mm-rate-x-61mm-id-single-t14-329788
Price: 103.36 USD
Availability: BackOrder

AST Linear Race Springs - 140mm Length x 320 N/mm Rate x 61mm ID - Single

$103.36

On Backorder

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

AST Linear Race Springs - 140mm Length x 320 N/mm Rate x 61mm ID - Single

Key Features

Fits suspension systems requiring a 61mm inner diameter spring.
Features a linear spring rate of 320 N/mm for consistent suspension response.
Has a length of 140mm, suitable for many coilover applications.
Designed for performance tuning and suspension rebuilding.
Manufactured by AST, a well-known name in suspension components.

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Product Details

If you're rebuilding your coilover setup or looking to fine-tune your suspension's stiffness, a linear race spring like this one from AST is a solid choice. This particular spring measures 140mm in length with a spring rate of 320 Newtons per millimeter, and it has a 61mm inner diameter, making it suitable for many performance coilover applications. Linear springs offer a consistent rate of resistance throughout their compression, which can lead to more predictable handling characteristics on the track or during spirited driving.

AST is known for producing well-built suspension components, and these springs are no exception. The 320 N/mm rate offers a noticeable increase in stiffness over stock springs, providing improved body control during cornering and braking. The 61mm inner diameter is a common size for many aftermarket coilover bodies, ensuring a good fit when paired with compatible components. Remember that changing spring rates can affect ride comfort, so consider your intended use when selecting the right spring for your needs.