What is a linear rate spring?

A linear rate spring increases its resistance to compression proportionally to how much it's compressed. This means if you compress it twice as much, it will push back twice as hard. This offers predictable handling for performance driving.

What does the spring rate (N/mm) mean?

The spring rate, measured in Newtons per millimeter (N/mm), indicates how stiff the spring is. A higher N/mm number means a stiffer spring, which will resist compression more strongly. This spring has a rate of 280 N/mm.

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

The inner diameter (ID) of this spring is 61mm. This measurement is important to ensure it fits correctly onto the shock body or perch of your coilover assembly.

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Specifications

Brand: AST
Part #: AST-140-280-61
UPC: astAST-140-280-61

AST Linear Race Springs - 140mm Length x 280 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 140mm Length x 280 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-140mm-length-x-280-n-mm-rate-x-61mm-id-single-t14-329786
Price: 103.36 USD
Availability: BackOrder

$103.36

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AST Linear Race Springs - 140mm Length x 280 N/mm Rate x 61mm ID - Single. Get a single, well-built coilover spring for your suspension build.

Key Features

This product is a single AST Linear Race Spring.
The spring measures 140mm in length.
It features a spring rate of 280 N/mm.
The inner diameter of the spring is 61mm.
This is a linear rate spring, meaning force increases proportionally with compression.

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About this part

Product Details

This listing is for a single AST Linear Race Spring. It measures 140mm in length and has a spring rate of 280 Newtons per millimeter, with an inner diameter of 61mm. These springs are designed for performance applications where precise suspension control is crucial.

Crafted for durability and consistent performance, this spring is a solid option for those building or rebuilding coilovers. The linear rate means that as the spring is compressed, the force increases proportionally, offering predictable handling characteristics. This is important for track use or spirited driving where consistent feedback from the suspension is key to maintaining control.

When working on your suspension, ensure you have the correct tools and safety equipment. This spring is intended for use with compatible coilover systems and may require specific installation procedures outlined by the coilover manufacturer.