What does a linear spring rate mean for my car's handling?

A linear spring rate means the spring's resistance to compression is constant. For every millimeter the spring is compressed, it exerts the same amount of force. This provides predictable and consistent suspension response, which is beneficial for performance driving where precise feedback is important.

What is the inner diameter of this spring?

This AST Linear Race Spring has an inner diameter of 61mm. It's important to ensure your coilover hardware is designed to accommodate this specific diameter for a proper fit.

What is the benefit of a 130mm length spring?

The 130mm length, combined with the 120 N/mm rate, helps define the travel and stroke of your suspension system. This specific dimension is chosen to achieve particular ride heights and control wheel travel effectively within a performance suspension setup.

AST Linear Race Spring 130mm 120 N/mm 61mm ID AST-130-120-61

Name: AST Linear Race Springs - 130mm Length x 120 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-130mm-length-x-120-n-mm-rate-x-61mm-id-single-t14-329748
Price: 103.36 USD
Availability: BackOrder

AST Linear Race Springs - 130mm Length x 120 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: 130mm length, 120 N/mm rate, 61mm ID. Built for performance suspension setups.

Key Features

This is a single AST Linear Race Spring.
The spring has a 61mm inner diameter.
It features a linear spring rate of 120 N/mm.
The overall length of the spring is 130mm.
Constructed from high-tensile steel for durability.

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Product Details

Starting with a 61mm inner diameter and a 120 N/mm spring rate, these AST Linear Race Springs are built for serious suspension tuning. The 130mm length offers a specific stroke and travel range that can be crucial for achieving the desired ride height and handling characteristics in a performance application.

These springs are constructed from high-tensile steel, a well-built material chosen for its ability to withstand repeated compression and extension cycles without losing its intended rate. The linear rate means that for every millimeter the spring is compressed, it exerts the same amount of force, providing predictable suspension behavior. This predictability is key for racers and serious track enthusiasts who need their suspension to react consistently under demanding conditions.

When building or rebuilding a coilover setup, selecting the correct spring rate and dimensions is fundamental. These AST springs are designed to be a direct fit for coilovers that accept a 61mm inner diameter spring, allowing for precise tuning of your vehicle's suspension geometry and responsiveness.