What is a linear spring rate?

A linear spring rate means the force the spring exerts increases at a constant rate as it is compressed. This provides predictable suspension behavior and consistent feedback to the driver.

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 absorber body or perch of your coilover system.

What kind of vehicle or application is this spring best suited for?

With its 180 N/mm rate and linear design, this spring is intended for performance-oriented vehicles and applications such as track days or spirited driving where precise suspension control is desired.

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Specifications

Brand: AST
Part #: AST-140-180-61
UPC: astAST-140-180-61

AST Linear Race Springs - 140mm Length x 180 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 140mm Length x 180 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-140mm-length-x-180-n-mm-rate-x-61mm-id-single-t14-329780
Price: 103.36 USD
Availability: BackOrder

$103.36

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AST Linear Race Springs: 140mm length, 180 N/mm rate, 61mm ID. Ideal for performance builds needing precise suspension tuning.

Key Features

This is a single AST Linear Race Spring.
The spring has a 61mm inner diameter.
It features a linear spring rate of 180 N/mm.
The overall length of the spring is 140mm.

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About this part

Product Details

With a 61mm inner diameter, these AST Linear Race Springs are built for performance applications where precise suspension control is key. The 180 N/mm spring rate offers a firm, responsive feel, making them suitable for track days or spirited driving where consistent damping and predictable handling are paramount.

Measuring 140mm in length, these springs are designed to work within specific coilover setups, allowing for fine-tuning of ride height and suspension geometry. Their linear rate means the spring force increases consistently as it compresses, providing predictable feedback to the driver and allowing the suspension to work effectively over a range of conditions.