What does a linear spring rate mean for my suspension?

A linear spring rate means the force the spring exerts increases proportionally with its compression. This provides a predictable and consistent suspension response, which is beneficial for performance driving and tuning.

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 verify compatibility with your specific setup.

What is the spring rate of this AST spring?

This spring has a rate of 170 N/mm. This indicates a firmer spring than most stock applications, designed to reduce body roll and improve handling during spirited driving or track use.

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Specifications

Brand: AST
Part #: AST-120-170-61
UPC: astAST-120-170-61

AST Linear Race Springs - 120mm Length x 170 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 120mm Length x 170 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-120mm-length-x-170-n-mm-rate-x-61mm-id-single-t14-329725
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

Fits vehicles with compatible coilover systems.
Linear spring rate of 170 N/mm for predictable suspension response.
Spring measures 120mm in length.
Features a 61mm inner diameter, a common size for many coilover applications.
Designed for performance and track-oriented suspension tuning.

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About this part

Product Details

This is a single AST Linear Race Spring. It measures 120mm in length and has a spring rate of 170 N/mm, with a 61mm inner diameter. These springs are designed for performance applications where precise suspension control is needed.

The linear spring rate means that as the spring is compressed, the force it exerts increases at a constant rate. This predictable behavior is crucial for tuning suspension setups, especially in racing or track day environments. The 61mm inner diameter is a common size for many coilover systems, making it a versatile option for builders and tuners looking to customize their suspension.

When selecting springs, consider the overall weight of your vehicle and your intended use. A 170 N/mm rate offers a firmer ride than stock, which can improve handling by reducing body roll during cornering. Always ensure compatibility with your existing coilover bodies or suspension components before purchasing.