What is a linear rate spring?

A linear rate spring increases its resistance to compression at a constant rate. This means that for every inch the spring is compressed, it exerts the same amount of force, leading to predictable suspension behavior.

What does the spring rate (60 N/mm) mean for my car?

A 60 N/mm spring rate is considered moderately stiff. It will offer a more responsive feel compared to stock springs and is often chosen for performance driving or track applications where reduced body roll and better control are desired.

What is the inner diameter (ID) of this spring?

The inner diameter of this AST spring is 61mm. This is a common size for many aftermarket coilover systems, but it's always best to measure your existing spring perch or shock body to ensure compatibility.

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Specifications

Brand: AST
Part #: AST-250-60-61
UPC: astAST-250-60-61

AST Linear Race Springs - 250mm Length x 60 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 250mm Length x 60 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-250mm-length-x-60-n-mm-rate-x-61mm-id-single-t14-329878
Price: 103.36 USD
Availability: BackOrder

$103.36

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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 - 250mm Length x 60 N/mm Rate x 61mm ID - Single. A well-built spring for performance suspension builds.

Key Features

This product is a single AST Linear Race Spring.
The spring measures 250mm in length.
It has a spring rate of 60 N/mm.
The inner diameter of the spring is 61mm.
Linear rate springs provide consistent force throughout compression.

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About this part

Product Details

This listing is for a single AST Linear Race Spring. You get one spring, measuring 250mm in length with a spring rate of 60 Newtons per millimeter and an inner diameter of 61mm. These springs are built for performance applications where precise suspension control is key.

Linear rate springs like these offer a consistent force increase as they compress, meaning the suspension response is predictable throughout its travel. The 60 N/mm rate is a moderately stiff spring, often used in track-day setups or for drivers who want a more connected feel to the road. The 61mm inner diameter is a common size for many coilover systems, making it a versatile option for custom builds or replacements.

When building or rebuilding coilovers, choosing the right spring rate is crucial for tuning your vehicle's handling. This AST spring is a solid option for those looking to fine-tune their suspension for improved performance and responsiveness.