What does a linear spring rate mean for my suspension?

A linear spring rate means that the force the spring exerts increases proportionally to how much it is compressed. This offers predictable suspension behavior, which is beneficial for tuning and consistent performance on the track.

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 performance coilover setups.

Is this spring sold individually or as a set?

This product listing is for a single AST linear race spring. If you need a set for your vehicle, you will need to purchase the required quantity separately.

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Specifications

Brand: AST
Part #: AST-140-110-61
UPC: astAST-140-110-61

AST Linear Race Springs - 140mm Length x 110 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 140mm Length x 110 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-140mm-length-x-110-n-mm-rate-x-61mm-id-single-t14-329773
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

This is a single AST linear race spring.
The spring measures 140mm in length.
It has a spring rate of 110 N/mm.
The inner diameter of the spring is 61mm.
Linear spring rate provides predictable force increase with compression.

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About this part

Product Details

AST is a well-known name in the performance suspension world, and these linear race springs are a prime example of their focus on track-ready components. This particular spring measures 140mm in length with a spring rate of 110 N/mm and a 61mm inner diameter, making it suitable for builds where precise damping control and consistent spring behavior are critical.

Designed for racing applications, the linear spring rate means that as the spring is compressed, the force it exerts increases proportionally. This predictable behavior is essential for tuning suspension dynamics on a race car, allowing for fine adjustments to ride height and stiffness. The 61mm inner diameter is a common size for many performance coilover systems, offering a good balance of strength and weight.