What is a linear spring rate?

A linear spring rate means that the force required to compress the spring increases at a constant rate. For every millimeter the spring is compressed, the force increases by 340 Newtons. This offers predictable suspension behavior.

What does the 61mm ID refer to?

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

Are these springs sold individually?

Yes, this product listing is for a single AST linear race spring. If you need a pair or a full set, you will need to order multiple units.

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Specifications

Brand: AST
Part #: AST-130-340-61
UPC: astAST-130-340-61

AST Linear Race Springs - 130mm Length x 340 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 130mm Length x 340 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-130mm-length-x-340-n-mm-rate-x-61mm-id-single-t14-329763
Price: 103.36 USD
Availability: BackOrder

$103.36

On Backorder

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Key Features

This is a single AST linear race spring.
The spring measures 130mm in length.
It has a spring rate of 340 N/mm.
The inner diameter is 61mm.

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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 specific spring measures 130mm in length with a spring rate of 340 Newtons per millimeter, and it has a 61mm inner diameter, making it suitable for many performance coilover setups.

Linear springs like these offer a consistent spring rate throughout their travel, meaning the force required to compress the spring increases predictably. This predictability is crucial for tuning suspension response on a race car or a performance-oriented street vehicle. The 61mm ID is a common size for many aftermarket and some OEM performance coilovers, allowing for broad compatibility when building or rebuilding suspension systems.