What is a linear spring rate?

A linear spring rate means that the force the spring exerts increases at a constant rate as it is compressed. For every millimeter of compression, the spring pushes back with the same amount of force, providing predictable suspension behavior.

What does the 61mm ID refer to?

The 61mm ID refers to 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 system.

What is the benefit of a 250mm length spring?

The 250mm length, combined with the 150 N/mm rate, is chosen for specific suspension tuning goals. It affects the overall travel and geometry of the suspension system, allowing for fine-tuning of ride height and performance characteristics.

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Specifications

Brand: AST
Part #: AST-250-150-61
UPC: astAST-250-150-61

AST Linear Race Springs - 250mm Length x 150 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 250mm Length x 150 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-250mm-length-x-150-n-mm-rate-x-61mm-id-single-t14-329891
Price: 103.36 USD
Availability: BackOrder

$103.36

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Key Features

Fits vehicles with 61mm inner diameter coilover applications.
Features a linear spring rate of 150 N/mm for predictable suspension response.
Spring measures 250mm in length.
Designed for performance and track use.

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About this part

Product Details

AST is known for making well-built suspension components, and these linear race springs are no exception. This specific spring measures 250mm in length, has a spring rate of 150 N/mm, and a 61mm inner diameter. These specifications make it suitable for performance-oriented builds where precise suspension control is important.

The linear spring rate means that for every millimeter the spring is compressed, it exerts the same amount of force. This predictable behavior is crucial for tuning suspension for specific track conditions or driving styles. The 61mm inner diameter is a common size for many coilover systems, making it a versatile option for custom setups or replacements.