What is a linear spring rate?

A linear spring rate means that the force required to compress the spring increases proportionally with the distance it's compressed. For every inch (or millimeter) you compress it, the resistance increases by the same amount. This offers predictable suspension behavior.

What does a 150 N/mm spring rate mean for my car?

A 150 N/mm spring rate is considered quite stiff. It will significantly reduce body roll during cornering and make the suspension feel more responsive. This is often chosen for track cars or performance builds where sharp handling is prioritized over ride comfort.

Are these springs sold individually or as a set?

This product listing is for a single spring. If you are replacing or upgrading coilover springs, you will typically need to purchase them in sets of four for a complete vehicle application.

AST Linear Race Spring 80mm 150 N/mm 61mm ID AST-80-150-61

Name: AST Linear Race Springs - 80mm Length x 150 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-80mm-length-x-150-n-mm-rate-x-61mm-id-single-t14-329674
Price: 103.36 USD
Availability: BackOrder

AST Linear Race Springs - 80mm Length x 150 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 - 80mm Length x 150 N/mm Rate x 61mm ID - Single

Key Features

This is a single AST Linear Race Spring.
The spring rate is 150 N/mm, indicating a stiffer suspension setup.
It measures 80mm in length.
The inner diameter is 61mm, suitable for many coilover applications.
Constructed from high-tensile steel for durability and consistent performance.

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Product Details

Starting with a 150 N/mm spring rate, these AST Linear Race Springs are built for performance applications where precise suspension control is key. The 80mm length and 61mm inner diameter are common dimensions for many coilover setups, making them a versatile choice for builders looking to fine-tune their vehicle's handling characteristics.

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 spring rate. The linear design means that for every unit of force applied, the spring compresses by a proportional amount, offering predictable suspension response. This predictability is crucial for setting up a vehicle for track use or spirited driving, as it allows for consistent feedback through the chassis.

When considering a spring swap, it's important to match the spring rate to your vehicle's weight and intended use. A higher spring rate like this 150 N/mm option will result in a stiffer ride, reducing body roll during cornering and improving responsiveness. Always refer to your coilover system's specifications to ensure compatibility with these dimensions and rate.