What does a linear spring rate mean?

A linear spring rate means that for every millimeter the spring is compressed, the force required to compress it further increases by a consistent amount (85 N/mm in this case). This provides predictable suspension behavior.

What is the inner diameter of this spring?

This AST Linear Race Spring has an inner diameter of 61mm. This is a common size for many aftermarket coilover applications.

Does this spring come with any hardware?

This product listing is for a single spring only. Any necessary hardware, such as spring perches or collars, would typically be part of the coilover kit or purchased separately.

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Specifications

Brand: AST
Part #: AST-250-85-61
UPC: astAST-250-85-61

AST Linear Race Springs - 250mm Length x 85 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 250mm Length x 85 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-250mm-length-x-85-n-mm-rate-x-61mm-id-single-t14-329883
Price: 103.36 USD
Availability: BackOrder

$103.36

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Fits vehicles with coilover systems requiring a 61mm inner diameter spring.
Spring rate is 85 N/mm, providing a firm and responsive suspension feel.
Spring length is 250mm.
Linear spring design offers consistent rate throughout compression.
Single spring sold individually.

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About this part

Product Details

This is a single AST Linear Race Spring, measuring 250mm in length with a spring rate of 85 Newtons per millimeter and a 61mm inner diameter. These springs are designed for performance applications where a consistent and predictable spring rate is crucial for handling. The linear design means the spring rate remains constant throughout its compression, offering predictable feedback to the driver.

Crafted for demanding use, these springs are built to withstand the rigors of track driving or spirited road use. The 61mm inner diameter is a common size for many coilover systems, making it a versatile option for builders or those looking to replace worn-out springs. When selecting springs, matching the rate to your vehicle's weight and intended use is key to achieving the desired ride and handling characteristics.