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 a consistent amount. In this case, it's 50 Newtons per millimeter. This provides a predictable and direct response to suspension movement.

What does the 61mm ID refer to?

ID stands for Inner Diameter. The 61mm measurement indicates the diameter of the opening in the center of the spring. This is important for ensuring the spring fits correctly onto the shock absorber body or spring perch of a coilover system.

What is this spring typically used for?

These springs are often used in performance and racing applications, particularly in coilover suspension systems. They are chosen when a specific, consistent spring rate is needed for tuning suspension geometry and achieving optimal handling characteristics on track or during spirited driving.

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Specifications

Brand: AST
Part #: AST-150-50-61
UPC: astAST-150-50-61

AST Linear Race Springs - 150mm Length x 50 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 150mm Length x 50 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-150mm-length-x-50-n-mm-rate-x-61mm-id-single-t14-329793
Price: 103.36 USD
Availability: BackOrder

$103.36

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Key Features

Fits coilover systems requiring a 150mm length spring.
Features a 50 N/mm spring rate for a firm and responsive suspension.
Has a 61mm inner diameter, common for many performance coilover applications.
Linear spring design ensures a predictable force increase with compression.
Constructed from high-tensile steel for durability under load.

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About this part

Product Details

This AST linear race spring measures 150mm in length and has a spring rate of 50 Newtons per millimeter, with a 61mm inner diameter. These springs are designed for performance applications where consistent spring rates are crucial for predictable handling. The linear rate means that as the spring is compressed, the force increases proportionally, offering a direct and responsive feel.

Constructed from high-tensile steel, these springs are built to withstand the rigors of track use and spirited driving. The consistent spring rate is important for tuning suspension geometry, allowing for precise adjustments to ride height and corner balancing. This specific spring is intended for use in coilover setups where a specific spring length and rate are required to achieve desired suspension performance.