What is a linear spring rate?

A linear spring rate means that for every millimeter the spring is compressed, the force it exerts increases by the same amount. This provides predictable suspension behavior, unlike progressive springs where the rate changes.

What does the inner diameter (ID) refer to?

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

Is this spring sold individually or as a set?

This specific product listing is for a single spring. If you need a set, you will need to purchase multiple individual springs.

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Specifications

Brand: AST
Part #: AST-220-60-61
UPC: astAST-220-60-61

AST Linear Race Springs - 220mm Length x 60 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 220mm Length x 60 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-220mm-length-x-60-n-mm-rate-x-61mm-id-single-t14-329863
Price: 103.36 USD
Availability: BackOrder

$103.36

On Backorder

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Key Features

This product includes one (1) AST Linear Race Spring.
Spring Length: 220mm
Spring Rate: 60 N/mm
Inner Diameter: 61mm
Linear spring rate provides consistent force throughout compression.
Designed for performance and racing applications.

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About this part

Product Details

This listing is for a single AST Linear Race Spring. You get one spring, measuring 220mm in length with a spring rate of 60 Newtons per millimeter and an inner diameter of 61mm. These springs are designed for performance applications where precise suspension control is critical.

Linear rate springs offer a consistent spring force throughout their compression range, meaning the stiffness doesn't change as the suspension moves. This predictable behavior is favored in racing and performance setups for its ability to provide direct feedback and stable handling. The 61mm inner diameter is a common size for many coilover systems, and the 220mm length offers a specific travel and ride height characteristic.

When building or rebuilding a performance suspension system, choosing the right spring rate is key to achieving the desired handling balance and comfort. These AST springs are a well-built option for those looking to fine-tune their vehicle's suspension for track use or spirited driving.