What is a linear spring rate?

A linear spring rate means that for every millimeter the spring is compressed, the force required to compress it further increases by the same amount (50 N/mm in this case). This provides predictable suspension behavior.

What does the 61mm ID refer to?

ID stands for Inner Diameter. The 61mm measurement indicates the diameter of the opening in the center of the spring, which is important for fitting onto coilover bodies or perches.

Is this spring sold individually?

Yes, this listing is for a single spring. If you need a set for your vehicle, you will need to purchase multiple individual springs.

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Specifications

Brand: AST
Part #: AST-130-50-61
UPC: astAST-130-50-61

AST Linear Race Springs - 130mm Length x 50 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 130mm Length x 50 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-130mm-length-x-50-n-mm-rate-x-61mm-id-single-t14-329741
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 product is a single AST Linear Race Spring.
Spring length is 130mm.
Spring rate is 50 N/mm.
Inner diameter is 61mm.
Linear spring design offers a consistent rate 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 with a length of 130mm, a spring rate of 50 Newtons per millimeter, and an inner diameter of 61mm. These springs are designed for performance applications where a consistent spring rate is crucial for predictable handling.

Linear race springs like these offer a straightforward spring rate that doesn't change significantly throughout its compression. This predictability is valued by racers and performance enthusiasts for tuning suspension response. The 61mm inner diameter is a common size for many coilover systems, and the 130mm length offers a specific travel and ride height characteristic. They are well-built for demanding use.