What is a linear spring rate?

A linear spring rate means the force required to compress the spring increases proportionally to how much it's compressed. This offers predictable handling characteristics, which is important for performance driving.

What does the 61mm ID refer to?

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

What is this spring typically used for?

This spring is designed for performance applications, often used in custom coilover builds or as a replacement for performance shock absorbers where a specific, consistent spring rate is needed for track or spirited driving.

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Specifications

Brand: AST
Part #: AST-100-170-61
UPC: astAST-100-170-61

AST Linear Race Springs - 100mm Length x 170 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 100mm Length x 170 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-100mm-length-x-170-n-mm-rate-x-61mm-id-single-t14-329699
Price: 103.36 USD
Availability: BackOrder

$103.36

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AST linear race springs - 100mm length, 170 N/mm rate, 61mm ID. Ideal for performance builds needing precise spring rates.

Key Features

Fits AST-100-170-61
100mm spring length
170 N/mm spring rate
61mm inner diameter
Linear spring rate for predictable performance
Designed for performance suspension applications

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About this part

Product Details

AST is known for making high-performance suspension components. This linear race spring is a solid option if you're building a custom coilover setup or replacing worn springs on an existing performance system. It measures 100mm in length with a 170 N/mm spring rate and a 61mm inner diameter, making it suitable for applications where precise control and consistent damping are key.

The linear rate means the spring's resistance increases predictably as it's compressed, which is crucial for predictable handling during aggressive driving. This spring is well-built for demanding use, offering a reliable performance characteristic for track days or spirited street driving. Its 61mm ID is a common size for many performance coilover bodies, but always double-check your existing setup to ensure compatibility.