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 offers predictable handling and consistent feedback, which is beneficial for performance driving.

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.

What is the purpose of a 75 N/mm spring rate?

A 75 N/mm spring rate provides a firm suspension setup. It's often chosen for track use or performance applications where reduced body roll and sharper handling are desired.

AST Linear Race Spring 180mm 75 N/mm 61mm ID AST-180-75-61

Name: AST Linear Race Springs - 180mm Length x 75 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-180mm-length-x-75-n-mm-rate-x-61mm-id-single-t14-329828
Price: 103.36 USD
Availability: BackOrder

AST Linear Race Springs - 180mm Length x 75 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 - 180mm Length x 75 N/mm Rate x 61mm ID - Single

Key Features

Fits coilovers with a 61mm inner diameter.
Features a linear spring rate of 75 N/mm for consistent suspension response.
Spring length is 180mm.
Single spring unit.

Secure CheckoutFast Shipping631-982-0042

Product Details

This is a single AST Linear Race Spring, measuring 180mm in length with a spring rate of 75 Newtons per millimeter and a 61mm inner diameter. These springs are designed for performance applications where precise suspension control is crucial.

The linear spring rate means that for every millimeter the spring is compressed, it exerts the same amount of force. This predictable behavior is favored in racing and performance setups for consistent handling and feedback. 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. The 180mm length is also a standard dimension, fitting a wide range of coilover shock bodies.

When building or rebuilding coilovers, selecting the right spring rate is key to achieving the desired ride quality and handling characteristics. A 75 N/mm rate offers a firm setup, suitable for track use or spirited driving where reduced body roll and improved responsiveness are priorities.