What is a linear spring rate?

A linear spring rate means the spring's resistance increases at a constant rate as it's compressed. For every millimeter the spring is compressed, it exerts the same amount of force, making suspension behavior predictable and easier to tune.

What does the 61mm ID refer to?

The 61mm ID refers to the inner diameter of the spring, which is 61 millimeters. This measurement is important for ensuring the spring fits correctly onto the shock absorber body or spring perch of your coilover assembly.

Are these springs sold individually?

Yes, these AST Linear Race Springs are sold as single units. If you are replacing springs on a coilover setup, you will need to order the appropriate quantity for your vehicle's suspension.

AST Linear Race Spring 80mm 220 N/mm 61mm ID AST-80-220-61

Name: AST Linear Race Springs - 80mm Length x 220 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-80mm-length-x-220-n-mm-rate-x-61mm-id-single-t14-329680
Price: 103.36 USD
Availability: BackOrder

AST Linear Race Springs - 80mm Length x 220 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 220 N/mm Rate x 61mm ID - Single

Key Features

Verified fitment for AST coilover systems.
Linear spring rate of 220 N/mm for predictable suspension response.
80mm spring length.
61mm inner diameter.
Constructed from well-built steel for consistent performance.

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Product Details

Starting with a 220 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, offering a solid foundation for tuning your vehicle's handling characteristics.

These springs are constructed from well-built steel, designed to maintain their rate consistently under load. The linear spring rate means that for every millimeter the spring is compressed, it exerts the same amount of force, making suspension behavior predictable and easier to tune. This predictability is crucial for track use or spirited driving, allowing for more consistent feedback and control.

When rebuilding or upgrading your coilovers, choosing the right spring rate is essential for achieving the desired ride and handling. These AST springs offer a specific rate that can be a good starting point for many performance builds, providing a noticeable improvement in cornering stability and responsiveness.