What is a linear spring rate?

A linear spring rate means that for every inch the spring is compressed, it exerts the same amount of force. This provides a predictable and consistent feel to your suspension's response during driving.

What does the 140 N/mm rate mean for my car?

A 140 N/mm spring rate is significantly stiffer than most factory springs. This will result in a firmer ride and improved body control during cornering and braking, reducing unwanted body roll.

Is this spring sold individually or as a set?

This product listing is for a single AST Linear Race Spring. If you are replacing or building coilovers, you will need to purchase multiple springs to match your application's requirements.

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Specifications

Brand: AST
Part #: AST-100-140-61
UPC: astAST-100-140-61

AST Linear Race Springs - 100mm Length x 140 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 100mm Length x 140 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-100mm-length-x-140-n-mm-rate-x-61mm-id-single-t14-329696
Price: 103.36 USD
Availability: BackOrder

$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.

Key Features

This is a single AST Linear Race Spring.
The spring measures 100mm in length.
It features a spring rate of 140 N/mm for a stiffer suspension setup.
The inner diameter is 61mm, a common size for performance coilovers.
Linear spring design offers predictable force application during compression.

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About this part

Product Details

When you're rebuilding your suspension or looking to fine-tune your coilover setup for track days or spirited driving, selecting the right spring rate is crucial. This AST Linear Race Spring is designed for those who need precise control over their vehicle's handling characteristics. Its linear rate means that as the spring compresses, the force it applies increases steadily, offering predictable suspension response.

This particular spring measures 100mm in length and has a spring rate of 140 N/mm, which translates to a stiffer ride compared to stock springs. The 61mm inner diameter is a common size for many performance coilover applications, making it a versatile choice for custom builds or replacements. AST is known for well-built suspension components, and these springs are made to handle the demands of performance driving, offering consistent performance lap after lap.