What is a linear spring rate?

A linear spring rate means the force the spring exerts increases at a constant rate as it compresses. This provides a predictable and consistent feel to your suspension's response.

What does the 80 N/mm rate mean for my car?

An 80 N/mm spring rate is significantly stiffer than most stock springs. It will reduce body roll during cornering and improve the responsiveness of your suspension, especially during spirited driving or track use.

What is the inner diameter of this spring?

This AST Linear Race Spring has an inner diameter of 61mm. This is a common size for many aftermarket coilover systems, but it's always best to measure your existing spring or shock body to ensure compatibility.

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Specifications

Brand: AST
Part #: AST-120-80-61
UPC: astAST-120-80-61

AST Linear Race Springs - 120mm Length x 80 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 120mm Length x 80 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-120mm-length-x-80-n-mm-rate-x-61mm-id-single-t14-329716
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.

AST Linear Race Springs - 120mm Length x 80 N/mm Rate x 61mm ID - Single. A well-built spring for performance suspension setups.

Key Features

This product is a single AST Linear Race Spring.
The spring measures 120mm in length.
It has a spring rate of 80 N/mm.
The inner diameter of the spring is 61mm.
Linear spring rate offers predictable suspension response.

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About this part

Product Details

This listing is for a single AST Linear Race Spring. It measures 120mm in length, has a spring rate of 80 N/mm, and an inner diameter of 61mm. These springs are designed for performance applications where precise suspension control is needed.

Linear rate springs offer a consistent force increase as they compress, meaning the suspension response is predictable throughout its travel. This makes them a popular choice for track cars or performance street setups where drivers want to feel exactly how the suspension is reacting. The 61mm inner diameter is a common size for many coilover systems, and the 80 N/mm rate offers a noticeable increase in stiffness over stock springs, improving handling and reducing body roll.